Dr. Ziemann's research focuses on experimental studies of the atmospheric and indoor air chemistry of organic gases and particles that affect human health, visibility, and climate. Laboratory experiments are conducted under simulated atmospheric conditions to elucidate mechanisms by which volatile organic compounds emitted from anthropogenic and biogenic sources react with oxidants to form products, some of which can condense to form microscopic particles. Information on the chemical composition of the products are used to develop atmospheric reaction mechanisms and models. These studies improve our understanding of atmospheric chemistry and aid in the development of air quality models for predicting the environmental fate of organic compounds and the formation and properties of organic aerosol particles and the impact of human activities on the atmospheric environment. Related studies focus on measuring and modeling the sources and fate of organic chemicals in indoor air.
keywords
atmospheric chemistry of organic chemicals, atmospheric aerosols, atmospheric reaction mechanisms, air pollution, climate effects of aerosols, indoor air chemistry
CHEM 4141 - Environmental Water and Soil Chemistry
Primary Instructor
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Spring 2018 / Spring 2019 / Spring 2020 / Spring 2021 / Spring 2022 / Spring 2023 / Spring 2024
Application of basic chemical principles to understanding the processes that determine the chemical composition of oceans, lakes, rivers, soils and sediments. Topics include air-water exchange; acid-base, redox, coordination, precipitation and dissolution, ion exchange and sorption reactions; nutrient chemistry; and the use of simple equilibrium and kinetic models for describing the chemistry of inorganic and organic species in air-water-soil systems. Same as CHEM 5141.
CHEM 5141 - Environmental Water and Soil Chemistry
Primary Instructor
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Spring 2018 / Spring 2019 / Spring 2020 / Spring 2021 / Spring 2022 / Spring 2023 / Spring 2024
Application of basic chemical principles to understanding the processes that determine the chemical composition of oceans, lakes, rivers, soils and sediments. Topics include air-water exchange; acid-base, redox, coordination, precipitation and dissolution, ion exchange and sorption reactions; nutrient chemistry; and the use of simple equilibrium and kinetic models for describing the chemistry of inorganic and organic species in air-water-soil systems. Same as CHEM 4141.
CHEM 5152 - Advanced Atmospheric Chemistry
Primary Instructor
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Spring 2018 / Spring 2019 / Spring 2020 / Spring 2021 / Spring 2022 / Spring 2023 / Fall 2023
Follows Graduate Atmospheric Chemistry (CHEM 5151) and explores advanced topics in atmospheric chemistry, such as secondary aerosol formation, oxidant formation, the chemistry of global climate change and/or design of advanced laboratory experiments. Recommended prerequisite: CHEM 5151 or ATOC 5151. Same as ATOC 5152.
CHEM 5181 - Mass Spectrometry, Chromatography, and Computer Programming
Primary Instructor
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Fall 2018 / Fall 2019 / Fall 2022 / Fall 2023
Covers mass spectrometry, including instrumentation, ionization techniques, and interpretation of spectra. Analytical separation methods such as gas and liquid chromatography, ion mobility, and capillary electrophoresis. Introduction to atmospheric chemistry applications. Computer programming (Igor and LabVIEW) and simulation of instrumentation and processes. Department prerequisite: basic computer programming (or willingness to work hard on it), and undergraduate physics, statistics, and physical chemistry.
CHEM 6901 - Research in Chemistry
Primary Instructor
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Spring 2018 / Fall 2018 / Spring 2019 / Spring 2020 / Fall 2020 / Spring 2021 / Fall 2022 / Spring 2023 / Spring 2024 / Fall 2024
May be repeated up to 15 total credit hours.
