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Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta

By:
, , , , ,
DOI: 10.1006/jare.2001.0836

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Abstract

Concentrations of selenium (Se) in bottom material ranged from 0.6 to 5.0 ??g g-1, and from 0.5 to 18.3 ??g g-1 in biota; 23% of samples exceeded the toxic threshold. Concentrations of DDE in biota exceeded the toxic threshold in 30% of the samples. Greater concentrations of selenium in biota were found at sites with strongly reducing conditions, no output, alternating periods of drying and flooding or dredging activities, and at sites that received water directly from the Colorado River. The smallest Se concentrations in biota were found at sites where an outflow and exposure or physical disturbance of the bottom material were uncommon. ?? 2001 Academic Press.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta
DOI:
10.1006/jare.2001.0836
Volume
49
Issue:
1
Year Published:
2001
Language:
English
First page:
65
Last page:
89
Number of Pages:
25