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Mar Pollut Bull. 2008 Dec;56(12):1992-2002. doi: 10.1016/j.marpolbul.2008.08.023. Epub 2008 Oct 10.

Discriminating sources of PCB contamination in fish on the coastal shelf off San Diego, California (USA).

Author information

1
Scripps Institution of Oceanography, Integrative Oceanography Division, University of California, San Diego, Mail Code 0227, 9500 Gilman Drive, La Jolla, CA 92093-0227, United States. edparnell@ucsd.edu

Abstract

Management of coastal ecosystems necessitates the evaluation of pollutant loading based on adequate source discrimination. Monitoring of sediments and fish on the shelf off San Diego has shown that some areas on the shelf are contaminated with polychlorinated biphenyls (PCBs). Here, we present an analysis of PCB contamination in fish on the shelf off San Diego designed to discriminate possible sources. The analysis was complicated by the variability of species available for analysis across the shelf, variable affinities of PCBs among species, and non-detects in the data. We utilized survival regression analysis to account for these complications. We also examined spatial patterns of PCBs in bay and offshore sediments and reviewed more than 20 years of influent and effluent data for local wastewater treatment facilities. We conclude that most PCB contamination in shelf sediments and fish is due to the ongoing practice of dumping contaminated sediments dredged from San Diego Bay.

PMID:
18848709
DOI:
10.1016/j.marpolbul.2008.08.023
[Indexed for MEDLINE]

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