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

Jaqueline García-Hernández, Kirke A. King, Anthony L. Velasco, Evgueni Shumilin, Miguel A. Mora, Edward P. Glenn

Research output: Contribution to conferencePaper

26 Citations (Scopus)

Abstract

Concentrations of selenium (Se) in bottom material ranged from 0.6 to 5.0 μg g -1 , and from 0.5 to 18.3 μg 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.
Original languageAmerican English
Pages65-89
Number of pages56
DOIs
StatePublished - 1 Jan 2001
Externally publishedYes
EventJournal of Arid Environments -
Duration: 1 Jan 2001 → …

Conference

ConferenceJournal of Arid Environments
Period1/01/01 → …

Fingerprint

Selenium
Pesticides
selenium
Chemical elements
biota
Rivers
river
physical disturbance
Dredging
DDE
dredging
Drying
outflow
flooding
Biota
organochlorine pesticide
material
Water
water

Cite this

García-Hernández, J., King, K. A., Velasco, A. L., Shumilin, E., Mora, M. A., & Glenn, E. P. (2001). Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta. 65-89. Paper presented at Journal of Arid Environments, . https://doi.org/10.1006/jare.2001.0836
García-Hernández, Jaqueline ; King, Kirke A. ; Velasco, Anthony L. ; Shumilin, Evgueni ; Mora, Miguel A. ; Glenn, Edward P. / Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta. Paper presented at Journal of Arid Environments, .56 p.
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García-Hernández, J, King, KA, Velasco, AL, Shumilin, E, Mora, MA & Glenn, EP 2001, 'Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta', Paper presented at Journal of Arid Environments, 1/01/01 pp. 65-89. https://doi.org/10.1006/jare.2001.0836

Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta. / García-Hernández, Jaqueline; King, Kirke A.; Velasco, Anthony L.; Shumilin, Evgueni; Mora, Miguel A.; Glenn, Edward P.

2001. 65-89 Paper presented at Journal of Arid Environments, .

Research output: Contribution to conferencePaper

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AU - Mora, Miguel A.

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García-Hernández J, King KA, Velasco AL, Shumilin E, Mora MA, Glenn EP. Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta. 2001. Paper presented at Journal of Arid Environments, . https://doi.org/10.1006/jare.2001.0836