Concentrations of Organic Contaminants in Mollusks and Sediments at NOAA National Status and Trend Sites in the Coastal and Estuarine United States | Zendy

Thomas P. O’Connor | Zendy

Open Access

Concentrations of Organic Contaminants in Mollusks and Sediments at NOAA National Status and Trend Sites in the Coastal and Estuarine United States

Author(s) -

Thomas P. O’Connor

Publication year - 1991

Publication title -

environmental health perspectives

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.257

H-Index - 282

eISSN - 1552-9924

pISSN - 0091-6765

DOI - 10.2307/3430847

Subject(s) - estuary , environmental science , contamination , environmental chemistry , oceanography , environmental protection , ecology , geology , biology , chemistry

Mean concentrations of PAHs, PCBs, and DDT in mollusks and sediments at sites in the National Status and Trends Program (NST) are distributed in log-normal fashion. The dry weight-based chlorinated organic concentrations in mollusks generally exceed those in nearby sediments by an order of magnitude. PAHs are found at similar concentrations in sediments and mollusks. Highest concentrations of PCBs and DDT in mollusks are in the ranges of 1000 to 4000 ng/g (dry) and 400 to 1000 ng/g (dry), respectively. The highest PAH concentrations in sediments are in the 10,000 to 50,000 ng/g (dry) range. While higher concentrations of contaminants can be found by sampling localized hot spots, the NST data represent the distribution of concentrations over general areas of the coastal United States.

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