selected publications
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chapter
- LC-TOF-MS for the Identification of Environmental Metabolites and Degradation Products. Comprehensive Analytical Chemistry. 231-261. 2016
- Occurrence of Transformation Products of Emerging Contaminants in Water Resources of the United States. 751-773. 2014
- A Decade of Measuring, Monitoring, and Studying the Fate and Transport of Triazine Herbicides and their Degradation Products in Groundwater, Surface Water, Reservoirs, and Precipitation by the US Geological Survey. 451-475. 2008
- LC-MS. I: Basic principles and technical aspects of LC-MS for pesticide analysis. Comprehensive Analytical Chemistry. 369-401. 2005
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conference proceeding
- Developing and improving accurate mass tools for the analysis of unknowns in surface and groundwater samples. ACS National Meeting Book of Abstracts. 2018
- Discovery of proprietary amino ethoxylates in hydraulic fracturing wastewater using LC/Q-TOF/MS with solid phase extraction. ACS National Meeting Book of Abstracts. 2018
- Biodegradation of organic additives and hydrocarbons from flowback water of the Denver-Julesburg Basin: A laboratory study of shallow groundwater conditions. ACS National Meeting Book of Abstracts. 2017
- Characterization of a hydraulically fractured well over a one year period: From fracturing fluid to produced water quality. ACS National Meeting Book of Abstracts. 2017
- Ion mobility mass spectrometry of hydraulic-fracturing fluids. ACS National Meeting Book of Abstracts. 2017
- Isolation of Dissolved Organic Matter (DOM) with XAD resins: Early studies. ACS National Meeting Book of Abstracts. 2017
- Isolation, analysis, and fingerprinting of organic compounds from hydraulic fracturing fluids using solid phase extraction and liquid chromatography mass spectrometry. ACS National Meeting Book of Abstracts. 2017
- LC/Q-TOF-MS for the identification of environmental metabolites and degradation products. ACS National Meeting Book of Abstracts. 2017
- NDMA precursor transformation and identification during reverse osmosis and UV/peroxide water treatment for indirect potable reuse. ACS National Meeting Book of Abstracts. 2017
- Polypropylene glycol surfactants and their degradation products as potential indicator compounds for shallow groundwater impacted by hydraulic fracturing fluids. ACS National Meeting Book of Abstracts. 2017
- Using dark matter accurate mass to discover NDMA precursors in wastewater. ACS National Meeting Book of Abstracts. 2017
- Utilization of soft and hard ionization techniques with 2-dimensional gas chromatography and high-resolution mass spectrometry for unknown identification in hydraulic fracturing fluid, flowback and produced water samples. ACS National Meeting Book of Abstracts. 2017
- Characterization and treatment of hydraulic fracturing wastewater over time from northeast Colorado. ACS National Meeting Book of Abstracts. 2016
- Analysis of hydraulic fracturing flowback and produced waters using accurate mass: IIdentification of ethoxylated surfactants. ACS National Meeting Book of Abstracts. 2015
- How stable are hydraulic fracturing fluid chemicals deep below the Earth's surface?. ACS National Meeting Book of Abstracts. 2015
- Solid phase extraction of organic matter, past to present: A review of isolation mechanisms from XAD to today's sorbents. ACS National Meeting Book of Abstracts. 2015
- "Classic Papers" on Aquatic Humic Substances: Use of the Hirsch Index. ACS Symposium Series. 7-25. 2013
- Aquatic humic substances: A short history through the lens of the Hirsch factor. ACS National Meeting Book of Abstracts. 2013
- Feasibility of LC/TOFMS and elemental database searching as a spectral library for pesticides in food. Food Additives and Contaminants. 1169-1178. 2005
- Decade of monitoring and studying the fate and transport of triazine herbicides in ground water and surface water.. ACS National Meeting Book of Abstracts. U75-U75. 2005
- Discovering metabolites of post-harvest fungicides in citrus with liquid chromatography/time-of-flight mass spectrometry and ion trap tandem mass spectrometry. Journal of Chromatography A. 71-80. 2004
- Multi-residue pesticide analysis in fruits and vegetables by liquid chromatography-time-of-flight mass spectrometry. Journal of Chromatography A. 81-90. 2004
- Herbicide and degradate flux in the Yazoo River Basin. International Journal of Environmental Analytical Chemistry. 1127-1140. 2004
- Comparison of quad rupole-time-of-flight (Q-tof), triple quadrupole, and ion-trap mass spectrometry/mass spectrometry (MS/MS) for the analysis of unknown pesticides and pharmaceuticals in water.. ACS National Meeting Book of Abstracts. U510-U510. 2002
- Analysis of emerging contaminants. ACS Symposium Series. 2-13. 2002
- Comparison of quadrupole time-of-flight, triple quadrupole, and ion-trap mass spectrometry/mass spectrometry for the analysis of emerging contaminants. ACS Symposium Series. 14-31. 2002
- Identification of homologue unknowns in wastewater by ion trap MSn: The diagnostic-ion approach. ACS Symposium Series. 376-393. 2002
- Identification of labile polar organic contaminants by atmospheric-pressure ionization tandem mass spectrometry. ACS Symposium Series. 175-187. 2002
- Identification of trifluralin metabolites in soil using ion-trap LC/MS/MS. ACS Symposium Series. 291-310. 2002
- TOF-MS and quadrupole ion-trap MS/MS for the discovery of herbicide degradates in groundwater. ACS Symposium Series. 128-144. 2002
- Accurate mass analysis of ethanesulfonic acid degradates of acetochlor and alachlor using high-performance liquid chromatography and time-of-flight mass spectrometry. Journal of Chromatography A. 3-9. 2001
- Detection of glyphosate in water using an affinity-enhanced enzyme-linked immunosorbent assay.. ACS National Meeting Book of Abstracts. U55-U55. 2001
- Solid phase extraction of sub-microgram-per-liter concentrations of sulfonamides and tetracyclines from water.. ACS National Meeting Book of Abstracts. U619-U619. 2001
- Using reverse-phase solid-phase extraction for isolation of pesticide degradates.. ACS National Meeting Book of Abstracts. U614-U615. 2001
- Extraction of antibiotics from agricultural wastewater.. ACS National Meeting Book of Abstracts. U26-U27. 2000
- Determination of organophosphorus pesticides in water samples using solid-phase extraction and gas chromatography/mass spectrometry.. ACS National Meeting Book of Abstracts. U655-U655. 2000
- First analysis and detection of the herbicide dimethenamid and its ESA metabolite in water.. ACS National Meeting Book of Abstracts. U76-U77. 2000
- Determination of ionic chloroacetanalide herbicide metabolites in surface water and groundwater by high-performance liquid chromatography-diode array detection and high-performance liquid chromatography/mass spectrometry.. ACS National Meeting Book of Abstracts. U97-U97. 1999
- Occurrence of acetochlor and acetochlor-metabolites in alluvial aquifers in Iowa.. ACS National Meeting Book of Abstracts. U97-U97. 1999
- Natural attenuation of chloroacetinilide herbicides in aquatic systems. 283-288. 1999
- Occurrence of acetanilide herbicide metabolites in ground water of the Midwest.. ACS National Meeting Book of Abstracts. U133-U134. 1998
- The relative attenuation factor (Ar): A new conceptual technique for comparing regional water-quality data in the Mississippi River Basin, USA. ACS National Meeting Book of Abstracts. U34-U34. 1998
- Evaluation of immunoassay for determination of pesticide concentrations at a large-scale ground-water contamination site. ACS National Meeting Book of Abstracts. 39-ENVR. 1996
- Extraction of hydroxylated atrazine degradation products from soil by cation exchange.. ACS National Meeting Book of Abstracts. 68-AGRO. 1996
- Integration immunoassay with conventional methods in the study of the fate and transport of herbicides in soil. ACS National Meeting Book of Abstracts. 13-ENVR. 1996
- Occurrence of deethylatrazine and deisopropylatrazine in surface and ground water. ACS National Meeting Book of Abstracts. 144-AGRO. 1996
- Triazine herbicides in the hydrologic cycle in the Mississippi River basin. ACS National Meeting Book of Abstracts. 143-AGRO. 1996
- Use of enzyme immunoassay for large water-quality surveys of major herbicides.. ACS National Meeting Book of Abstracts. 4-ENVR. 1996
- Effects of hydrophyte community structure on atrazine and alachlor degradation in wetlands. 525-538. 1995
- The deethylatrazine/atrazine ratio as an indicator of the onset of the spring flush of herbicides into surface water of the Midwestern United States. International Journal of Environmental Analytical Chemistry. 203-214. 1995
- CHEMISTRY AND SOURCES OF NATURAL AQUATIC FOAM. ACS National Meeting Book of Abstracts. 15-IEC. 1995
- Organic geochemistry and sources of natural aquatic foams. ACS Symposium Series. 151-192. 1995
- A first application of enzyme-linked immunosorbent assay for screening cyclodiene insecticides in ground water. ACS Symposium Series. 148-154. 1995
- An evaluation of a microtiter-plate enzyme-linked immunosorbent assay method for the analysis of triazine and chloroacetanilide herbicides in storm runoff samples. ACS Symposium Series. 170-182. 1995
- ANALYSIS OF RIVER WATER FOR THE HERBICIDES 2,4-D AND DICAMBA BY SOLID-PHASE EXTRACTION, DERIVATIZATION, AND GAS-CHROMATOGRAPHY - MASS-SPECTROMETRY. ACS National Meeting Book of Abstracts. 13-ENVR. 1995
- CYANAZINE, ATRAZINE, AND THEIR METABOLITES AS GEOCHEMICAL INDICATORS OF CONTAMINANT TRANSPORT IN THE MISSISSIPPI RIVER. ACS National Meeting Book of Abstracts. 62-ENVR. 1995
- Cyanazine, atrazine, and their metabolites as geochemical indicators of contaminant transport in the Mississippi river. ACS Symposium Series. 288-303. 1995
- EVIDENCE FOR LONG-RANGE ATMOSPHERIC TRANSPORT AND DEGRADATION OF HERBICIDES. ACS National Meeting Book of Abstracts. 58-ENVR. 1995
- HERBICIDES AND METABOLITES IN SURFACE-WATER, RAINWATER, AND GROUND-WATER IN THE MIDWESTERN UNITED-STATES. ACS National Meeting Book of Abstracts. 56-ENVR. 1995
- Herbicide metabolites in surface water and groundwater: Introduction and overview. ACS Symposium Series. 1-15. 1995
- IDENTIFICATION OF A NEW METABOLITE OF METOLACHLOR IN SOIL - THE IMPORTANCE OF THE SULFONIC-ACID PATHWAY. ACS National Meeting Book of Abstracts. 28-ENVR. 1995
- MOVEMENT OF ATRAZINE, CYANAZINE, DEETHYLATRAZINE AND DEISOPROPYLATRAZINE IN SOIL. ACS National Meeting Book of Abstracts. 30-ENVR. 1995
- RELATION OF LANDSCAPE POSITION AND IRRIGATION TO CONCENTRATIONS OF ALACHLOR, ATRAZINE, AND SELECTED DEGRADATES IN REGOLITH IN NORTHEASTERN NEBRASKA. ACS National Meeting Book of Abstracts. 187-ENVR. 1995
- Relation of landscape position and irrigation to concentrations of alachlor, atrazine, and selected degradates in regolith in northeastern Nebraska. ACS Symposium Series. 178-197. 1995
- THE FATE AND DEGRADATION OF CYANAZINE IN WETLANDS. ACS National Meeting Book of Abstracts. 47-ENVR. 1995
- THE TRANSPORT OF CYANAZINE AND ATRAZINE METABOLITES IN THE UNSATURATED ZONE. ACS National Meeting Book of Abstracts. 61-ENVR. 1994
- AQUATIC HUMIC SURFACTANTS - A LABILE FRACTION OF DISSOLVED CARBON POOL. ACS National Meeting Book of Abstracts. 50-GEOC. 1994
- FRACTIONATION OF HUMIC MATERIAL IN TALL-GRASS PRAIRIE SOIL WATERS. ACS National Meeting Book of Abstracts. 48-GEOC. 1994
- NATURAL SURFACTANTS AND THE CHEMISTRY OF NATURAL AQUATIC FOAMS. ACS National Meeting Book of Abstracts. 51-GEOL. 1994
- OCCURRENCE AND TRANSPORT OF HERBICIDES IN THE MISSISSIPPI RIVER DURING THE 1993 FLOOD. ACS National Meeting Book of Abstracts. 131-AGRO. 1994
- OCCURRENCE OF ALACHLOR AND ITS ETHANESULFONIC ACID METABOLITE IN RESERVOIRS. ACS National Meeting Book of Abstracts. 127-AGRO. 1994
- PART-PER-TRILLION ANALYSIS OF ATRAZINE IN SOIL USING IMMUNOASSAY. ACS National Meeting Book of Abstracts. 92-AGRO. 1994
- TEMPORAL AND GEOGRAPHIC DISTRIBUTION OF HERBICIDES IN PRECIPITATION IN THE MIDWEST AND NORTHEAST UNITED-STATES, 1990-1991. 697-710. 1993
- CHEMISTRY OF AQUATIC HUMIC SURFACTANTS - CHARACTERIZATION AND POSSIBLE ROLE IN ENHANCED DEGRADATION OF HERBICIDES. 769-774. 1992
- HERBICIDES AND NITRATE IN STORM RUNOFF FROM WATERSHEDS IN THE MIDWESTERN UNITED-STATES. ACS National Meeting Book of Abstracts. 123-AGRO. 1992
- APPLICATION OF MIXED-MODE, SOLID-PHASE EXTRACTION IN ENVIRONMENTAL AND CLINICAL-CHEMISTRY - COMBINING HYDROGEN-BONDING, CATION-EXCHANGE AND VANDERWAALS INTERACTIONS. Journal of Chromatography A. 11-21. 1992
- AUTOMATED SOLID-PHASE EXTRACTION OF HERBICIDES FROM WATER FOR GAS-CHROMATOGRAPHIC MASS-SPECTROMETRIC ANALYSIS. Journal of Chromatography A. 55-59. 1992
- AUTOMATED SOLID-PHASE EXTRACTION OF HERBICIDES FROM WATER FOR GC/MS ANALYSIS. ACS National Meeting Book of Abstracts. 78-ENVR. 1992
- MAPPING THE REGIONAL OCCURRENCE OF HERBICIDES IN SURFACE-WATER OF THE MIDWESTERN UNITED-STATES BY IMMUNOASSAY AND GC/MS. ACS National Meeting Book of Abstracts. 257-ENVR. 1992
- MIXED-MODE ISOLATION AND PURIFICATION OF TRIAZINE HERBICIDES FROM ORGANIC AND AQUEOUS-SOLUTIONS. ACS National Meeting Book of Abstracts. 12-ENVR. 1992
- MIXED-MODE SOLID-PHASE EXTRACTION - SIMULATING INTERACTIONS WITH 3-D MOLECULAR-MODELING SOFTWARE. ACS National Meeting Book of Abstracts. 13-ENVR. 1992
- PART-PER-TRILLION ANALYSIS OF ATRAZINE IN PRISTINE WATER - A METHOD FOR COUPLING SOLID-PHASE EXTRACTION AND IMMUNOASSAY. ACS National Meeting Book of Abstracts. 172-AGRO. 1992
- CHARACTERIZATION OF SELF-ASSEMBLED MONOLAYERS OF GENETICALLY ENGINEERED CYTOCHROME-B5. 163-170. 1991
- HERBICIDES IN STREAMS - MIDWESTERN UNITED-STATES. Irrigation and Drainage. 17-23. 1991
- SOURCE OF ATRAZINE AND DESETHYLATRAZINE IN A RIVER, DURING BASE-FLOW. Irrigation and Drainage. 253-259. 1991
- HERBICIDES IN ATMOSPHERIC WET DEPOSITION IN THE UPPER MIDWEST AND NORTHEAST UNITED-STATES. ACS National Meeting Book of Abstracts. 17-AGRO. 1991
- STRUCTURAL COMPONENTS AND PROPOSED STRUCTURAL MODELS OF FULVIC-ACID FROM THE SUWANNEE RIVER. ACS National Meeting Book of Abstracts. 48-GEOC. 1990
- OCCURRENCE AND TREATMENT OF ATRAZINE AND ITS DEGRADATION PRODUCTS IN DRINKING-WATER. 871-894. 1990
- COLLECTING AND CONCENTRATING LARGE SUSPENDED SEDIMENT SAMPLES FOR ORGANIC CONTAMINANT ANALYSIS. ACS National Meeting Book of Abstracts. 103-ENVR. 1990
- IMMUNOASSAY AS A SCREENING TOOL FOR TRIAZINE HERBICIDES IN STREAMS - COMPARISON WITH GAS-CHROMATOGRAPHIC MASS-SPECTROMETRIC METHODS. 86-99. 1989
- FIELD COMPARISON OF PURGE AND TRAP GAS-CHROMATOGRAPHY MASS-SPECTROMETRY, PURGABLE ORGANIC CHLORINE, AND TOTAL ORGANIC-CARBON ANALYSIS FOR MONITORING VOLATILE CHLORINATED HYDROCARBONS IN GROUND-WATER. ACS National Meeting Book of Abstracts. 99-ENVR. 1989
- WHAT IS THE COMPOSITION OF ORGANIC-ACIDS IN AQUATIC SYSTEMS AND HOW ARE THEY CHARACTERIZED. 75-95. 1989
- HERBICIDES IN GROUND AND SURFACE-WATER IN THE MIDCONTINENTAL UNITED-STATES - A RESEARCH PLAN. 55-67. 1988
- TRACE ORGANIC-COMPOUNDS IN GROUND-WATER IN SOUTH-CENTRAL KANSAS AS INFERRED FROM GAS-CHROMATOGRAPHY WITH FLAME-IONIZATION DETECTION. ACS National Meeting Book of Abstracts. 4-ENVR. 1988
- LINEAR ALKYLBENZENE SULFONATES IN GROUNDWATER - POTENTIAL FOR CO-ISOLATION WITH HUMIC SUBSTANCES. ACS National Meeting Book of Abstracts. 74-ENVR. 1987
- AN INVESTIGATION OF HUMIC SUBSTANCES BY PY-MS PATTERN-RECOGNITION. ACS National Meeting Book of Abstracts. 48-GEOC. 1983
- HUMIC SUBSTANCES IN GROUNDWATER. ACS National Meeting Book of Abstracts. 89-ENVR. 1983
- NATURE AND SOURCE OF HUMIC SUBSTANCES ISOLATED FROM SURFACE WATERS. ACS National Meeting Book of Abstracts. 7-GEOC. 1981
- OCCURRENCE OF FULVIC AND HUMIC ACIDS IN UNCONTAMINATED GROUND WATERS. ACS National Meeting Book of Abstracts. 6-GEOC. 1981
- CONSIDERATIONS RELEVANT TO THE USE OF XAD RESINS IN CONCENTRATING ORGANICS FOR TOXICITY STUDIES. ACS National Meeting Book of Abstracts. 40-ENVR. 1980
- ENZACRYL GEL CHROMATOGRAPHY OF AQUEOUS HUMIC SUBSTANCES. ACS National Meeting Book of Abstracts. 21-21. 1979
- HYDROPHILIC ORGANIC SOLUTES AS TRACERS IN GROUNDWATER RECHARGE STUDIES. ACS National Meeting Book of Abstracts. 8-8. 1979
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journal article
- Occurrence of Benzene Polycarboxylic Acids in Ash and Streamwater after the Cameron Peak Fire. 3848-3857. 2023
- Comparison of Oxidants Used in Advanced Oxidation for Potable Reuse: Non-Target Analysis and Bioassays. 690-700. 2023
- Non-target mass spectrometry analysis of NDMA precursors in advanced treatment for potable reuse (vol 4, pg 1944, 2018). Environmental Science: Water Research & Technology. 686-686. 2022
- Wildfires: Identification of a new suite of aromatic polycarboxylic acids in ash and surface water. Science of the Total Environment. 2021
- Sustainable microalgae-based technology for biotransformation of benzalkonium chloride in oil and gas produced water: A laboratory-scale study. Science of the Total Environment. 2020
- Desalting and Concentration of Common Hydraulic Fracturing Fluid Additives and their Metabolites with Solid-Phase Extraction. Journal of Chromatography A. 2020
- Nontargeted Screening of Water Samples Using Data-Dependent Acquisition with Similar Partition Searching. Journal of the American Society for Mass Spectrometry. 1189-1204. 2020
- Molecular Identification of Water-Extractable Organic Carbon from Thermally Heated Soils: C-13 NMR and Accurate Mass Analyses Find Benzene and Pyridine Carboxylic Acids. Environmental Science and Technology (Washington). 2994-3001. 2020
- Identification of opioids in surface and wastewaters by LC/QTOF-MS using retrospective data analysis. Science of the Total Environment. 874-884. 2019
- Degradation of polyethylene glycols and polypropylene glycols in microcosms simulating a spill of produced water in shallow groundwater. Environmental Science Processes and Impacts. 256-268. 2019
- Non-target mass spectrometry analysis of NDMA precursors in advanced treatment for potable reuse. Environmental Science: Water Research & Technology. 1944-1955. 2018
- Opioid occurrence in environmental water samples-A review. Trends in Environmental Analytical Chemistry. 2018
- Identification of Proprietary Amino Ethoxylates in Hydraulic Fracturing Wastewater Using Liquid Chromatography/Time-of-Flight Mass Spectrometry with Solid-Phase Extraction. Analytical Chemistry. 10927-10934. 2018
- Organic Chemical Characterization and Mass Balance of a Hydraulically Fractured Well: From Fracturing Fluid to Produced Water over 405 Days. Environmental Science and Technology (Washington). 14006-14015. 2017
- UHPLC Coupled with Accurate Mass and High Resolution Mass Spectrometry for Complex Environmental Analyses. LC GC Europe. 243-244. 2017
- Identification of polypropylene glycols and polyethylene glycol carboxylates in flowback and produced water from hydraulic fracturing. Journal of Hazardous Materials. 11-17. 2017
- LC/QTOF-MS fragmentation of N-nitrosodimethylamine precursors in drinking water supplies is predictable and aids their identification. Journal of Hazardous Materials. 18-25. 2017
- Hydraulic fracturing wastewater treatment by coagulation-adsorption for removal of organic compounds and turbidity. Journal of Environmental Chemical Engineering. 1978-1984. 2016
- Identification of polypropylene glycols and polyethylene glycol carboxylates in wastewater from hydraulic fracturing. Journal of Hazardous Materials. 2016
- Identification of Novel Perfluoroalkyl Ether Carboxylic Acids (PFECAs) and Sulfonic Acids (PFESAs) in Natural Waters Using Accurate Mass Time-of-Flight Mass Spectrometry (TOFMS). Environmental Science and Technology (Washington). 11622-11630. 2015
- Analysis of hydraulic fracturing additives by LC/Q-TOF-MS. Analytical and Bioanalytical Chemistry. 6417-6428. 2015
- Methadone Contributes to N-Nitrosodimethylamine Formation in Surface Waters and Wastewaters during Chloramination. Environmental Science and Technology Letters. 151-157. 2015
- Characterization of hydraulic fracturing flowback water in Colorado: Implications for water treatment. Science of the Total Environment. 637-644. 2015
- Chemical constituents and analytical approaches for hydraulic fracturing waters. Trends in Environmental Analytical Chemistry. 18-25. 2015
- Degradation pathways of lamotrigine under advanced treatment by direct UV photolysis, hydroxyl radicals, and ozone. Chemosphere. 316-323. 2014
- Identification of Prometon, Deisopropylprometon, and Hydroxyprometon in Groundwater by High Resolution Liquid Chromatography/Mass Spectrometry. Science of the Total Environment. 459-466. 2014
- Analysis of Hydraulic Fracturing Flowback and Produced Waters Using Accurate Mass: Identification of Ethoxylated Surfactants. Analytical Chemistry. 9653-9661. 2014
- Demonstrating sucralose as a monitor of full-scale UV/AOP treatment of trace organic compounds. Journal of Hazardous Materials. 104-110. 2014
- Determination of COREXIT components used in the Deepwater Horizon cleanup by liquid chromatography-ion trap mass spectrometry. Analytical Methods: advancing methods and applications. 5498-5502. 2014
- Dimer formation during UV photolysis of diclofenac. Chemosphere. 1948-1956. 2013
- Analytical Methodologies for the Detection of Sucralose in Water. Analytical Chemistry. 9581-9587. 2013
- Identification of imidacloprid metabolites in onion (Allium cepa L.) using high-resolution mass spectrometry and accurate mass tools. Rapid Communications in Mass Spectrometry. 1891-1903. 2013
- In-Stream Attenuation of Neuro-Active Pharmaceuticals and Their Metabolites. Environmental Science and Technology (Washington). 9781-9790. 2013
- Widespread occurrence of neuro-active pharmaceuticals and metabolites in 24 Minnesota rivers and wastewaters. Science of the Total Environment. 519-527. 2013
- Analysis of Isobaric Pesticides in Pepper with High-Resolution Liquid Chromatography and Mass Spectrometry: Complementary or Redundant?. Journal of Agricultural and Food Chemistry. 2340-2347. 2013
- Innovative determination of polar organophosphonate pesticides based on high-resolution Orbitrap mass spectrometry. Journal of Mass Spectrometry. 1458-1465. 2012
- Analysis of 100 pharmaceuticals and their degradates in water samples by liquid chromatography/quadrupole time-of-flight mass spectrometry. Journal of Chromatography A. 148-157. 2012
- Liquid chromatography/quadrupole-time-of-flight mass spectrometry with metabolic profiling of human urine as a tool for environmental analysis of dextromethorphan. Journal of Chromatography A. 158-166. 2012
- Identification of pesticide transformation products in agricultural soils using liquid chromatography/quadrupole-time-of-flight mass spectrometry. Rapid Communications in Mass Spectrometry. 1091-1099. 2012
- Methods for evaluating in-stream attenuation of trace organic compounds. Applied Geochemistry. S344-S345. 2011
- LC/TOF-MS Analysis of Pesticides in Fruits and Vegetables: The Emerging Role of Accurate Mass in the Unambiguous Identification of Pesticides in Food. Methods in Molecular Biology. 193-218. 2011
- Identification of a New Antidepressant and its Glucuronide Metabolite in Water Samples Using Liquid Chromatography/Quadrupole Time-of-Flight Mass Spectrometry. Analytical Chemistry. 8161-8168. 2010
- Analysis of 70 Environmental Protection Agency priority pharmaceuticals in water by EPA Method 1694. Journal of Chromatography A. 5674-5686. 2010
- The isotopic mass defect: a tool for limiting molecular formulas by accurate mass. Analytical and Bioanalytical Chemistry. 2807-2816. 2010
- Analysis of sucralose and other sweeteners in water and beverage samples by liquid chromatography/time-of-flight mass spectrometry. Journal of Chromatography A. 4127-4134. 2010
- Degradation and products of diclofenac during UV photolysis. ACS National Meeting Book of Abstracts. 2010
- Environmental Applications of a UHPLC System: The Evolution of Chromatography. American Laboratory: practical resources for laboratory scientists. 22-+. 2010
- Gas chromatographic-mass spectrometric fragmentation study of phytoestrogens as their trimethylsilyl derivatives: Identification in soy milk and wastewater samples. Journal of Chromatography A. 6024-6032. 2009
- A national reconnaissance for pharmaceuticals and other organic wastewater contaminants in the United States - II) Untreated drinking water sources. Science of the Total Environment. 201-216. 2008
- Identification of photocatalytic degradation products of bezafibrate in TiO2 aqueous suspensions by liquid and gas chromatography. Journal of Chromatography A. 38-48. 2008
- Multi-residue method for the analysis of 101 pesticides and their degradates in food and water samples by liquid chromatography/time-of-flight mass spectrometry. Journal of Chromatography A. 24-37. 2007
- Importance of the electron mass in the calculations of exact mass by time-of-flight mass spectrometry. Rapid Communications in Mass Spectrometry. 2538-2539. 2007
- Screening and confirmation of 100 pesticides in food samples by liquid chromatography/tandem mass spectrometry. Rapid Communications in Mass Spectrometry. 3869-3882. 2007
- The even-electron rule in electrospray mass spectra of pesticides. Rapid Communications in Mass Spectrometry. 3855-3868. 2007
- "Does atrazine transform to propazine in aquatic sediments?" - Comment on "Biological and chemical transformations of atrazine in coastal aquatic sediments" by Kelly L. Smalling and C. Marjorie Aelion [Chemosphere 62 (2006) 188-196]. Chemosphere. 1440-1441. 2006
- Accurate-mass identification of chlorinated and brominated products of 4-nonylphenol, nonylphenol dimers, and other endocrine disrupters. Journal of Mass Spectrometry. 1287-1297. 2006
- High-resolution and accurate mass analysis of xenobiotics in food. Analytical Chemistry. 6702-6708. 2006
- Analysis of herbicides in olive oil by liquid chromatography time-of-flight mass spectrometry. Journal of Agricultural and Food Chemistry. 6493-6500. 2006
- Urban contributions of glyphosate and its degradate AMPA to streams in the United States. Science of the Total Environment. 191-197. 2006
- Exact-mass library for pesticides using a molecular-feature database. Rapid Communications in Mass Spectrometry. 3659-3668. 2006
- Photo-fenton degradation of diclofenac:: Identification of main intermediates and degradation pathway. Environmental Science and Technology (Washington). 8300-8306. 2005
- Application of time-of-flight mass spectrometry to the analysis of phototransformation products of diclofenac in water under natural sunlight. Journal of Mass Spectrometry. 908-915. 2005
- Herbicides and degradates in shallow aquifers of Illinois: Spatial and temporal trends. Journal of the American Water Resources Association. 537-547. 2005
- Measuring the mass of an electron by LC/TOF-MS: A study of "twin ions". Analytical Chemistry. 3394-3400. 2005
- Quantitation and accurate mass analysis of pesticides in vegetables by LC/TOF-MS. Analytical Chemistry. 2818-2825. 2005
- Widespread detection of N,N-diethyl-m-toluamide in US streams:: Comparison with concentrations of pesticides, personal care products, and other organic wastewater compounds. Environmental Toxicology and Chemistry. 1029-1034. 2005
- Determination of pesticide residues in olives and olive oil by matrix solid-phase dispersion followed by gas chromatography/mass spectrometry and liquid chromatography/tandem mass spectrometry. Journal of Chromatography A. 183-194. 2005
- Matching unknown empirical formulas to chemical structure using LC/MS TOF accurate mass and database searching: example of unknown pesticides on tomato skins. Journal of Chromatography A. 127-134. 2005
- Searching for non-target chlorinated pesticides in food by liquid chromatography/time-of-flight mass spectrometry. Rapid Communications in Mass Spectrometry. 2780-2788. 2005
- Degradates provide insight to spatial and temporal trends of herbicides in ground water. Ground Water. 601-608. 2004
- Herbicide concentrations in the Mississippi River Basin - the importance of chloroacetanilide herbicide degradates. Science of the Total Environment. 189-199. 2004
- Combination of LC/TOF-MS and LC/ion trap MS/MS for the identification of diphenhydramine in sediment samples. Analytical Chemistry. 1437-1444. 2004
- Intramolecular isobaric fragmentation: A curiosity of accurate mass analysis of sulfadimethoxine in pond water. Analytical Chemistry. 1228-1235. 2004
- Liquid chromatography/time-of-flight mass spectrometric analyses for the elucidation of the photodegradation products of triclosan in wastewater samples. Rapid Communications in Mass Spectrometry. 443-450. 2004
- Liquid chromatography/time-of-flight/mass spectrometry (LC/TOF/MS) for the analysis of emerging contaminants. Trends in Analytical Chemistry. 750-756. 2003
- Herbicides and transformation products in surface waters of the Midwestern United States. Journal of the American Water Resources Association. 743-756. 2003
- Changes in concentrations of triazine and acetamide herbicides by bank filtration, ozonation, and chlorination in a public water supply (vol 266, pg 190, 2002). Journal of Hydrology. 287-288. 2003
- Herbicides and herbicide degradation products in upper Midwest agricultural streams during august base-flow conditions. Journal of Environmental Quality. 1025-1035. 2003
- Comment on "pharmaceuticals, hormones, and other organic wastewater contaminants in US streams, 1999-2000: A national reconnaissance". Environmental Science and Technology (Washington). 1052-1053. 2003
- Response to comment on "pharmaceuticals, hormones, and other organic wastewater contaminants in US streams, 1999-2000: A national reconnaissance". Environmental Science and Technology (Washington). 1054-1054. 2003
- River discharge measurements by using helicopter-mounted radar. Geophysical Research Letters. 2002
- Movement of atrazine and deethylatrazine through a midwestern reservoir. Journal of the American Water Works Association. 54-66. 2002
- Determination of isoxaflutole (balance) and its metabolites in water using solid phase extraction followed by high-performance liquid chromatography with ultraviolet or mass spectrometry. Journal of Agricultural and Food Chemistry. 5816-5824. 2002
- Linker-assisted immunoassay and liquid chromatography/mass spectrometry for the analysis of glyphosate. Analytical Chemistry. 4937-4943. 2002
- Changes in concentrations of triazine and acetamide herbicides by bank filtration, ozonation, and chlorination in a public water supply. Journal of Hydrology. 190-208. 2002
- Comment on "Pharmaceuticals, hormones, and other organic wastewater contaminants in US streams, 1999-2000: A national reconnaissance". Environmental Science and Technology (Washington). 4003-4003. 2002
- Response to Comment on,"Pharmaceuticals, hormones, and other organic wastewater contaminants in US streams, 1999-2000: A national reconnaissance". Environmental Science and Technology (Washington). 4007-4008. 2002
- Response to comment on "Pharmaceuticals, hormones, and other organic wastewater contaminants in US streams, 1999-2000: A national reconnaissance". Environmental Science and Technology (Washington). 4004-4004. 2002
- Parasite (Ribeiroia ondatrae) infection linked to amphibian malformations in the western United States. Ecological Monographs. 151-168. 2002
- Pharmaceuticals, hormones, and other organic wastewater contaminants in US streams, 1999-2000: A national reconnaissance. Environmental Science and Technology (Washington). 1202-1211. 2002
- Analysis and detection of the herbicides dimethenamid and flufenacet and their sulfonic and oxanilic acid degradates in natural water. Journal of Agricultural and Food Chemistry. 1045-1052. 2002
- Choosing between atmospheric pressure chemical ionization and electrospray ionization interfaces for the HPLC/MS analysis of pesticides. Analytical Chemistry. 5441-5449. 2001
- Analysis of trace levels of sulfonamide and tetracycline antimicrobials, in groundwater and surface water using solid-phase extraction and liquid chromatography/mass spectrometry. Analytical Chemistry. 4640-4646. 2001
- Differentiating nonpoint sources of deisopropylatrazine in surface water using discrimination diagrams. Journal of Environmental Quality. 1836-1843. 2001
- Formation and transport of the sulfonic acid metabolites of alachlor and metolachlor in soil. Environmental Science and Technology (Washington). 2455-2460. 2001
- Occurrence of cyanazine compounds in groundwater: Degradates more prevalent than the parent compound. Environmental Science and Technology (Washington). 1217-1222. 2001
- Detection of pesticides and pesticide metabolites using the cross reactivity of enzyme immunoassays. Journal of AOAC International. 162-167. 2001
- Regional water-quality analysis of 2,4-D and dicamba in river water using gas chromatography isotope dilution mass spectrometry. International Journal of Environmental Analytical Chemistry. 185-198. 2001
- Comparison of enzyme-linked immunosorbent assay and gas chromatography procedures for the detection of cyanazine and metolachlor in surface water samples. Journal of Agricultural and Food Chemistry. 5881-5886. 2000
- Alachlor transformation patterns in aquatic field mesocosms under variable oxygen and nutrient conditions. Water Research. 4054-4062. 2000
- Sources and haloacetic acid/trihalomethane formation potentials of aquatic humic substances in the Wakarusa River and Clinton Lake near Lawrence, Kansas. Environmental Science and Technology (Washington). 4278-4286. 2000
- Multivariate correlation between concentrations of selected herbicides and derivatives in outflows from selected US midwestern reservoirs. Environmental Science and Technology (Washington). 3307-3314. 2000
- Atmospheric transport, deposition, and fate of triazine herbicides and their metabolites in pristine areas at Isle Royale National Park. Environmental Science and Technology (Washington). 3079-3085. 2000
- 7th Symposium on the Chemistry and Fate of Modern Pesticides, Lawrence, KS, USA, 14-16 September 1999 - Foreword. Journal of Chromatography A. 1-1. 2000
- Analysis of selected herbicide metabolites in surface and ground water of the United States. Science of the Total Environment. 157-167. 2000
- Changes in herbicide concentrations in Midwestern streams in relation to changes in use, 1989-1998. Science of the Total Environment. 255-263. 2000
- Detection of persistent organic pollutants in the Mississippi Delta using semipermeable membrane devices. Science of the Total Environment. 169-179. 2000
- Determination of chloroacetanilide herbicide metabolites in water using high-performance liquid chromatography-diode array detection and high-performance liquid chromatography/mass spectrometry. Science of the Total Environment. 147-155. 2000
- Finding minimal herbicide concentrations in ground water? Try Looking for their degradates. Science of the Total Environment. 115-122. 2000
- Occurrence of cotton herbicides and insecticides in playa lakes of the High Plains of West Texas. Science of the Total Environment. 189-200. 2000
- Use of radioimmunoassay as a screen for antibiotics in confined animal feeding operations and confirmation by liquid chromatography/mass spectrometry. Science of the Total Environment. 181-187. 2000
- First LC/MS determination of cyanazine amide, cyanazine acid, and cyanazine in groundwater samples. Environmental Science and Technology (Washington). 714-718. 2000
- Measuring stream discharge by non-contact methods: A proof-of-concept experiment. Geophysical Research Letters. 553-556. 2000
- Advances in solid-phase extraction disks for environmental chemistry. Trends in Analytical Chemistry. 18-26. 2000
- Metolachlor and alachlor breakdown product formation patterns in aquatic field mesocosms. Environmental Science and Technology (Washington). 4471-4476. 1999
- Metolachlor and its metabolites in tile drain and stream runoff in the canajoharie Greek watershed. Environmental Science and Technology (Washington). 3531-3537. 1999
- Hydroxyatrazine in soils and sediments. Environmental Toxicology and Chemistry. 2161-2168. 1999
- Surface water-ground water interaction: Herbicide transport into municipal collector wells. Journal of Environmental Quality. 1396-1405. 1999
- DBP formation potential of aquatic humic substances. Journal of the American Water Works Association. 103-115. 1999
- Double-disk solid-phase extraction: Simultaneous cleanup and trace enrichment of herbicides and metabolites from environmental samples. Analytical Chemistry. 1009-1015. 1999
- Relation of usage to the occurrence of gotten and rice herbicides in three streams of the Mississippi delta. Environmental Science and Technology (Washington). 3673-3680. 1998
- The environmental occurrence of herbicides: The importance of degradates in ground water. Archives of Environmental Contamination and Toxicology. 385-390. 1998
- Degradation of chloroacetanilide herbicides: The prevalence of sulfonic and oxanilic acid metabolites in Iowa groundwaters and surface waters. Environmental Science and Technology (Washington). 1738-1740. 1998
- Investigation of anion-exchange and immunoaffinity particle-loaded membranes for the isolation of charged organic analytes from water. Analytical Chemistry. 1969-1978. 1998
- Contribution of hydroxylated atrazine degradation products to the total atrazine load in midwestern streams. Environmental Science and Technology (Washington). 40-48. 1998
- Evaluation of microtiter-plate enzyme-linked immunosorbent assay for the analysis of triazine and chloroacetanilide herbicides in rainfall. Environmental Science and Technology (Washington). 163-168. 1998
- Identification of ionic chloroacetanilide-herbicide metabolites in surface water and groundwater by HPLC/MS using negative ion spray. Analytical Chemistry. 4547-4553. 1997
- A study of the temporal variability of atrazine in private well water .1. Study design, implementation, and database development. Environmental Monitoring and Assessment. 175-195. 1997
- Assessing aquifer contamination risk using immunoassay: Trace analysis of atrazine in unsaturated zone sediments. Journal of Environmental Quality. 1080-1089. 1997
- Occurrence of selected herbicides and herbicide degradation products in Iowa's ground water, 1995. Ground Water. 679-688. 1997
- Herbicides and their metabolites in rainfall: Origin, transport, and deposition patterns across the midwestern and northeastern United States, 1990-1991. Environmental Science and Technology (Washington). 1325-1333. 1997
- Mixed-mode sorption of hydroxylated atrazine degradation products to soil: A mechanism for bound residue. Environmental Science and Technology (Washington). 1539-1546. 1997
- Nuclear magnetic resonance identification of new sulfonic acid metabolites of chloroacetanilide herbicides. Journal of Agricultural and Food Chemistry. 1240-1243. 1997
- Terbuthylazine and deethylterbuthylazine in rain and surface water - Determination by enzyme immunoassay and gas chromatography mass spectrometry. Acta hydrochimica et hydrobiologica / Journal for Water and Wastewater Research. 5-10. 1997
- Acetochlor in the hydrologic system in the midwestern United States, 1994. Environmental Science and Technology (Washington). 1459-1464. 1996
- Glutathione conjugation and contaminant transformation. Environmental Science and Technology (Washington). 1413-1418. 1996
- Identification of a new sulfenic acid metabolite of metolachlor in soil. Environmental Science and Technology (Washington). 592-597. 1996
- Occurrence of alachlor and its sulfonated metabolite in rivers and reservoirs of the midwestern United States: The importance of sulfonation in the transport of chloroacetanilide herbicides. Environmental Science and Technology (Washington). 569-574. 1996
- Occurrence of selected pesticides and their metabolites in near-surface aquifers of the midwestern United States. Environmental Science and Technology (Washington). 335-340. 1996
- PESTICIDES IN NEAR-SURFACE AQUIFERS - AN ASSESSMENT USING HIGHLY SENSITIVE ANALYTICAL METHODS AND TRITIUM. Journal of Environmental Quality. 1125-1132. 1995
- FORMATION AND TRANSPORT OF DEETHYLATRAZINE AND DEISOPROPYLATRAZINE IN SURFACE-WATER. Environmental Science and Technology (Washington). 2267-2277. 1994
- DETERMINATION OF ALACHLOR AND ITS SULFONIC-ACID METABOLITE IN WATER BY SOLID-PHASE EXTRACTION AND ENZYME-LINKED-IMMUNOSORBENT-ASSAY. Analytical Chemistry. 1495-1499. 1994
- PREFERENTIAL DEALKYLATION REACTIONS OF S-TRIAZINE HERBICIDES IN THE UNSATURATED ZONE. Environmental Science and Technology (Washington). 600-605. 1994
- REDUCTION OF NONPOINT-SOURCE CONTAMINATION OF SURFACE-WATER AND GROUNDWATER BY STARCH ENCAPSULATION OF HERBICIDES. Environmental Science and Technology (Washington). 73-79. 1994
- COUPLING SOLID-PHASE EXTRACTION AND ENZYME-LINKED-IMMUNOSORBENT-ASSAY FOR ULTRATRACE DETERMINATION OF HERBICIDES IN PRISTINE WATER. Analytical Chemistry. 2894-2898. 1993
- GROUNDWATER AS A NONPOINT-SOURCE OF ATRAZINE AND DEETHYLATRAZINE IN A RIVER DURING BASE-FLOW CONDITIONS. Water Resources Research. 1719-1729. 1993
- SYMPOSIUM ON SOLID-PHASE EXTRACTION IN ENVIRONMENTAL AND CLINICAL-CHEMISTRY - HELD IN CONJUNCTION WITH THE 203RD ACS NATIONAL MEETING - SAN-FRANCISCO, CA (USA), APRIL 5-10, 1992 - FOREWORD. Journal of Chromatography A. 1-1. 1993
- BIOMARKER COMPOUNDS AS SOURCE INDICATORS FOR DISSOLVED FULVIC-ACIDS IN A BOG. Biogeochemistry: an international journal. 195-212. 1993
- A RECONNAISSANCE STUDY OF HERBICIDES AND THEIR METABOLITES IN SURFACE-WATER OF THE MIDWESTERN UNITED-STATES USING IMMUNOASSAY AND GAS-CHROMATOGRAPHY MASS-SPECTROMETRY. Environmental Science and Technology (Washington). 2440-2447. 1992
- COMPARISON OF PURGE AND TRAP GC/MS AND PURGEABLE ORGANIC CHLORIDE ANALYSIS FOR MONITORING VOLATILE CHLORINATED HYDROCARBONS. Ground Water. 836-842. 1992
- MIXED-MODE ISOLATION OF TRIAZINE METABOLITES FROM SOIL AND AQUIFER SEDIMENTS USING AUTOMATED SOLID-PHASE EXTRACTION. Analytical Chemistry. 1985-1990. 1992
- ISOLATION OF HYDROPHILIC ORGANIC-ACIDS FROM WATER USING NONIONIC MACROPOROUS RESINS. Organic Geochemistry. 567-573. 1992
- FATE OF ALKYLBENZENESULFONATES AND DIALKYLTETRALINSULFONATES IN SEWAGE-CONTAMINATED GROUNDWATER. Environmental Science and Technology (Washington). 1140-1148. 1992
- HERBICIDE TRANSPORT IN RIVERS - IMPORTANCE OF HYDROLOGY AND GEOCHEMISTRY IN NONPOINT-SOURCE CONTAMINATION. Environmental Science and Technology (Washington). 538-545. 1992
- DISTINGUISHING SYMPATHOMIMETIC AMINES FROM AMPHETAMINE AND METHAMPHETAMINE IN URINE BY GAS-CHROMATOGRAPHY MASS-SPECTROMETRY. Journal of Analytical Toxicology. 19-27. 1992
- GEOCHEMICAL HETEROGENEITY IN A SAND AND GRAVEL AQUIFER - EFFECT OF SEDIMENT MINERALOGY AND PARTICLE-SIZE ON THE SORPTION OF CHLOROBENZENES. Journal of Contaminant Hydrology. 35-54. 1992
- HERBICIDES IN SURFACE WATERS OF THE MIDWESTERN UNITED-STATES - THE EFFECT OF SPRING FLUSH. Environmental Science and Technology (Washington). 1794-1796. 1991
- FORMATION AND TRANSPORT OF DEETHYLATRAZINE IN THE SOIL AND VADOSE ZONE. Journal of Environmental Quality. 540-547. 1991
- IMMUNOASSAY AS A SCREENING TOOL FOR TRIAZINE HERBICIDES IN STREAMS - COMPARISON WITH GAS-CHROMATOGRAPHIC MASS-SPECTROMETRIC METHODS. ACS Symposium Series. 86-99. 1991
- TEMPORAL AND SPATIAL VARIATIONS IN THE SOLUTE CONTENT OF AN ALPINE STREAM, COLORADO FRONT RANGE. Geomorphology. 55-72. 1990
- ENZYME-LINKED-IMMUNOSORBENT-ASSAY COMPARED WITH GAS-CHROMATOGRAPHY MASS-SPECTROMETRY FOR THE DETERMINATION OF TRIAZINE HERBICIDES IN WATER. Analytical Chemistry. 2043-2048. 1990
- RETARDATION OF AMMONIUM AND POTASSIUM-TRANSPORT THROUGH A CONTAMINATED SAND AND GRAVEL AQUIFER - THE ROLE OF CATION-EXCHANGE. Environmental Science and Technology (Washington). 1402-1408. 1989
- SEPARATION OF HUMIC SUBSTANCES AND ANIONIC SURFACTANTS FROM GROUND-WATER BY SELECTIVE ADSORPTION. ACS Symposium Series. 107-114. 1989
- INTELLIGENT DATA ANALYZER - HERBICIDE TRANSPORT IN THE CEDAR RIVER, IOWA. ACS National Meeting Book of Abstracts. 5-ENVR. 1988
- LONG-TERM FATE OF ORGANIC MICROPOLLUTANTS IN SEWAGE-CONTAMINATED GROUNDWATER. Environmental Science and Technology (Washington). 205-211. 1988
- DETERMINATION OF ALKYLBENZENESULFONATE SURFACTANTS IN GROUNDWATER USING MACRORETICULAR RESINS AND C-13 NUCLEAR-MAGNETIC-RESONANCE SPECTROMETRY. Analytical Chemistry. 1798-1802. 1987
- BIOGEOCHEMISTRY OF AQUATIC HUMIC SUBSTANCES IN THOREAU BOG, CONCORD, MASSACHUSETTS. Ecology. 1339-1352. 1985
- PYROLYSIS-MASS SPECTROMETRY PATTERN-RECOGNITION ON A WELL-CHARACTERIZED SUITE OF HUMIC SAMPLES. Geochimica et Cosmochimica Acta. 2091-2096. 1985
- COMPLEXATION OF COPPER BY AQUATIC HUMIC SUBSTANCES FROM DIFFERENT ENVIRONMENTS. Science of the Total Environment. 65-76. 1983
- MULTIDISCIPLINARY RESEARCH - AN EXPERIMENT. Environmental Science and Technology (Washington). A511-A511. 1983
- THE CONTRIBUTION OF HUMIC SUBSTANCES TO THE ACIDITY OF COLORED NATURAL-WATERS. Geochimica et Cosmochimica Acta. 2031-2035. 1983
- PREPARATIVE ISOLATION OF AQUATIC HUMIC SUBSTANCES. Environmental Science and Technology (Washington). 463-466. 1981
- BASELINE STUDY OF THE CONCENTRATION OF MOLYBDENUM IN BOTTOM SEDIMENTS OF THE MAJOR RIVERS IN COLORADO, USA. Journal of Geochemical Exploration. 249-261. 1979
- COMPARISON OF XAD MACROPOROUS RESINS FOR THE CONCENTRATION OF FULVIC-ACID FROM AQUEOUS-SOLUTION. Analytical Chemistry. 1799-1803. 1979
- CONDUCTIMETRIC DETECTION OF ORGANIC-ACIDS IN REVERSED-PHASE CHROMATOGRAPHY. Journal of Chromatography A. 625-634. 1979
- SEPARATION OF HUMIC SUBSTANCES BY PH GRADIENT DESORPTION FROM A HYDROPHOBIC RESIN. Analytical Chemistry. 2041-2043. 1979
- PREDICTION OF CAPACITY FACTORS FOR AQUEOUS ORGANIC SOLUTES ADSORBED ON A POROUS ACRYLIC RESIN. Analytical Chemistry. 775-779. 1978
- GEOLOGY AND RB-SR CHRONOLOGY OF MIDDLE PRECAMBRIAN ROCKS IN EASTERN AND CENTRAL WISCONSIN. Geological Society of America Bulletin. 1255-1265. 1975