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Biogeochemical processes governing exposure and uptake of organic pollutant compounds in aquatic organisms.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Farrington, John W. |
| Copyright Year | 1991 |
| Abstract | This paper reviews current knowledge of biogeochemical cycles of pollutant organic chemicals in aquatic ecosystems with a focus on coastal ecosystems. There is a bias toward discussing chemical and geochemical aspects of biogeochemical cycles and an emphasis on hydrophobic organic compounds such as polynuclear aromatic hydrocarbons, polychlorinated biphenyls, and chlorinated organic compounds used as pesticides. The complexity of mixtures of pollutant organic compounds, their various modes of entering ecosystems, and their physical chemical forms are discussed. Important factors that influence bioavailability and disposition (e.g., organism-water partitioning, uptake via food, food web transfer) are reviewed. These factors include solubilities of chemicals; partitioning of chemicals between solid surfaces, colloids, and soluble phases; variables rates of sorption, desorption; and physiological status of organism. It appears that more emphasis on considering food as a source of uptake and bioaccumulation is important in benthic and epibenthic ecosystems when sediment-associated pollutants are a significant source of input to an aquatic ecosystem. Progress with mathematical models for exposure and uptake of contaminant chemicals is discussed briefly. |
| Starting Page | 75 |
| Ending Page | 84 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| PubMed reference number | 1904812v1 |
| Volume Number | 90 |
| Journal | Environmental health perspectives |
| Alternate Webpage(s) | http://ftp.ncbi.nlm.nih.gov/pub/pmc/0c/b9/envhper00386-0075.PMC1519506.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | AROMATICS Aquatic Organisms Colloids Ecosystem Hydrocarbons Mathematics Organic Chemicals Pesticides Polychlorinated Biphenyls Polycyclic Hydrocarbons, Aromatic Review [Publication Type] Sediment mixture pollutant |
| Content Type | Text |
| Resource Type | Article |
