Contaminant concentrations in sport fish from San Francisco Bay, 1997.
In 1997, seven sport fish species were sampled from seven popular fishing areas in San Francisco Bay. Mercury exceeded a human health screening value in 44 of 84 (52%) samples. All collected samples of leopard shark and striped bass exceeded the mercury screening value of 0.23 microg/g wet weight. PCBs exceeded the screening value in 51 of 72 (71%) samples. DDT, chlordane, and dieldrin, had lower numbers of samples above screening values: 16 of 72 (22%) for DDT, 11 of 72 (15%) for chlordanes, and 27 of 72 (37%) for dieldrin. Concentrations of PCBs and other trace organics were highest in white croaker and shiner surfperch, the two species with the highest fat content in their muscle tissue. Fish from one location, Oakland Harbor, had significantly elevated wet weight concentrations of mercury, PCBs, DDTs, and chlordanes compared to other locations. Removal of skin from white croaker fillets reduced lipid concentrations by 27-49% and concentrations of trace organics by 33-40%.
Davis
Jay A
JA
San Francisco Estuary Institute, 7770 Pardee Lane, Oakland, CA 94621, USA. jay@sfei.org
May
Michael D
MD
Greenfield
Ben K
BK
Fairey
Russell
R
Roberts
Cassandra
C
Ichikawa
Gary
G
Stoelting
Matt S
MS
Becker
Jonathan S
JS
Tjeerdema
Ronald S
RS
D000818:Animals; D002140:California; D004785:Environmental Pollutants / Q000032:analysis / Q000493:pharmacokinetics*; D005398:Fisheries; D005399:Fishes; D005506:Food Contamination; D007306:Insecticides / Q000032:analysis / Q000493:pharmacokinetics*; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000493:pharmacokinetics*; D011998:Recreation; D014018:Tissue Distribution; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000493:pharmacokinetics*
D004785:Environmental Pollutants; D007306:Insecticides; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls