Determination of total mercury in fillets of sport fishes collected from Folsom and New Melones Reservoirs, California, 2004
Open-File Report
2007-1077
Prepared in cooperation with the U.S. Bureau of Reclamation
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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 and New Melones Reservoirs 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 fish fillets from Folsom Reservoir ranged from 0.09 to 1.16 micrograms per gram wet weight, and from New Melones Reservoir ranged from 0.03 to 0.94 microgram per gram wet weight. Most of the fish fillets from Folsom Reservoir (87 percent) and 27 percent of the fillets from New Melones Reservoir exceeded the U.S. Environmental Protection Agency's fish consumption advisory of 0.30 microgram per gram wet weight.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Determination of total mercury in fillets of sport fishes collected from Folsom and New Melones Reservoirs, California, 2004 |
| Series title | Open-File Report |
| Series number | 2007-1077 |
| DOI | 10.3133/ofr20071077 |
| Year Published | 2007 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Columbia Environmental Research Center |
| Description | 16 p. |
| Google Analytic Metrics | Metrics page |