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Determination of total mercury in fillets of sport fishes collected from Folsom Reservoir, California, 2006

Open-File Report 2007-1078
Prepared in cooperation with the U.S. Bureau of Reclamation
By:  and 
https://doi.org/10.3133/ofr20071078

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Abstract

This report presents the results of a study by the U.S. Geological Survey, done in cooperation with the U.S. Bureau of Reclamation, to determine mercury concentrations in selected sport fishes from Folsom Reservoir in California. Fillets were collected from each fish sample, and after homogenization and lyophilization of fish fillets, mercury concentrations were determined with a direct mercury analyzer utilizing the process of thermal combustion-gold amalgamation atomic absorption spectroscopy. Mercury concentrations in fillets ranged from 0.031 to 0.20 micrograms per gram wet weight in rainbow trout (Oncorhynchus mykiss) samples and 0.071 to 0.16 micrograms per gram wet weight in bluegill (Lepomis macrochirus) samples. Mercury concentration was 0.98 microgram per gram wet weight in a single spotted bass (Micropterus punctulatus) sample, which was the only one in the sample set which exceeded the U.S. Environmental Protection Agency's fish consumption advisory of 0.30 microgram per gram wet weight.

Suggested Citation

May, T.W., and Brumbaugh, W.G., 2007, Determination of total mercury in fillets of sport fishes collected from Folsom Reservoir, California, 2006: U.S. Geological Survey Open-File Report 2007-1078, 14 p., https://doi.org/10.3133/ofr20071078.

ISSN: 2331-1258 (online)

Publication type Report
Publication Subtype USGS Numbered Series
Title Determination of total mercury in fillets of sport fishes collected from Folsom Reservoir, California, 2006
Series title Open-File Report
Series number 2007-1078
DOI 10.3133/ofr20071078
Year Published 2007
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Columbia Environmental Research Center
Description 14 p.
Additional publication details