PMID: 9419254Jan 31, 1998Paper

Concentrations of chlorinated organic compounds in biota and bed sediment in streams of the San Joaquin Valley, California

Archives of Environmental Contamination and Toxicology
L R Brown

Abstract

Samples of resident biota and bed sediments were collected in 1992 from 18 sites on or near the floor of the San Joaquin Valley, California, for analysis of 33 organochlorine compounds. The sites were divided into five groups on the basis of physiographic region and land use. Ten compounds were detected in tissue, and 15 compounds were detected in bed sediment. The most frequently detected compound in both media was p,p'-DDE. Concentrations of SigmaDDT (sum of o,p'- and p, p' forms of DDD, DDE, and DDT) were statistically different among groups of sites for both tissue and sediment (Kruskal-Wallis, p < 0.05). Concentrations in both media were highest in streams draining the west side of the valley. Concentrations of SigmaDDT in tissue were significantly correlated with specific conductance, pH, and total alkalinity (p < 0.05), which are indicators of the proportion of irrigation return flows in stream discharge. Concentrations in sediment on a dry-weight basis were not correlated with these water-quality parameters, but total organic carbon (TOC) normalized concentrations were significantly correlated with specific conductance and pH (p < 0.05). Regressions of the concentration of SigmaDDT in tissue, as a function of SigmaDDT i...Continue Reading

Citations

Jan 11, 2008·Archives of Environmental Contamination and Toxicology·Ben K GreenfieldPeter G Green
Sep 25, 2010·Environmental Monitoring and Assessment·Yugo TakabeTakeshi Nakano
Mar 9, 2005·Fish & Shellfish Immunology·Ichiro MisumiCarl B Schreck
Aug 21, 2003·Ecotoxicology and Environmental Safety·Steven J Hamilton
Dec 17, 2008·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Hyun-Min HwangRobert W Holmes
May 10, 2001·Environmental Toxicology and Chemistry·G R LotufoM L Gedeon
Aug 26, 2006·Environmental Research·Michael S ConnorChristine Werme
Oct 29, 2002·Journal of Environmental Monitoring : JEM·Fernando P CarvalhoAdela Cruz
Oct 11, 2003·Journal of Environmental Quality·Ying OuyangJim Y Ren

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