Characterization of the Structural and Chemical Properties of Copper Chelators in Seawater
WOODS HOLE OCEANOGRAPHIC INST MA DEPT OF MARINE CHEMISTRY AND GEOCHEMISTRY
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The long-term goal is to obtain a comprehensive understanding of copper chemistry and bioavailability in seawater, at the molecular level. We are particularly interested in the relationship between water chemistry and biological effects of copper. This information can be used for accurate assessments of the impacts of Cu introduced to harbors by human activities. Such information may also be useful in the development of accurate and economical strategies to detect and remove Cu and other contaminants from waste. Results can be used by dischargers, like the US Navy, and regulators, including the EPA and local agencies, to make informed decisions about managing Cu inputs into harbors and other receiving waters. The primary objectives of this project relate to naturally occurring Cu binding ligands. Our work, and that of others, shows that these ligands control the variability in Cu bioavailability in many coastal waters. We seek to learn more about the chemical properties of these poorly characterized substances. Current titration methodologies provide information about binding constants and concentrations only. Structural information is necessary to validate hypotheses about sources and sinks with a view to modeling variability and to identify compounds with unique properties of relevance to the navy.
- Organic Chemistry
- Physical Chemistry
- Physical and Dynamic Oceanography
- Properties of Metals and Alloys