Release of weak and strong copper‐complexing agents by algae1 Journal Article uri icon



  • By means of potentiometric titrations, the copper‐complexing properties of organic compounds released by 21 algal species are characterized. Most eucaryotic species released measurable amounts (10−6 M) of copper‐complexing agents that could be modeled as weak organic acids with log{*KCuL} = 0.5. Of seven blue‐green algal species studied, four produced about 5 × 10−7 M concentrations of strong copper‐complexing agents with conditional stability constants in the range 108 to 1012; two produced complexing agents similar to those produced by the eucaryotes. In time‐course experiments with three chlorophytes and two cyanophytes, the release of measurable concentrations of copper‐complexing agents occurred principally during stationary phase.

publication date

  • September 1, 1979

has restriction

  • bronze

Date in CU Experts

  • March 23, 2014 5:02 AM

Full Author List

  • McKnight DM; Morel FMM

author count

  • 2

Other Profiles

International Standard Serial Number (ISSN)

  • 0024-3590

Electronic International Standard Serial Number (EISSN)

  • 1939-5590

Additional Document Info

start page

  • 823

end page

  • 837


  • 24


  • 5