The Kinetics and Thermodynamics of Copper Complexation in Aquatic Systems
Abstract
Copper complexation is ubiquitous in natural waters. Yet, many questions remain on the chemistry and biogeochemistry of naturally-occurring complexing agents. This thesis examines the sources and extent of biological cycling of such complexing agents and also the physical-chemical nature of their interactions with copper. Investigations of copper complexation in coastal ponds and coordinated laboratory studies suggest that both labile, biogenic and refractory ligands contribute to the observed copper complexation. Culture and incubation experiments demonstrate ligand production associated with phytoplankton photosynthetic activity and suggest microbial degradation of complexing agents. However in the coastal ponds studied, the biological cycling of natural complexing agents is obscured possibly due to contributions of refractory ligands to the observed copper complexation, mixing of pond waters with coastal seawater, or to the natural balance between biological production and degradation. (rrh)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1988
- Accession Number
- ADA218657
Entities
People
- Janet G. Hering
Organizations
- Woods Hole Oceanographic Institution