Tags

Type your tag names separated by a space and hit enter

Organochlorine chemical residues in fish from the Mississippi River basin, 1995.
Arch Environ Contam Toxicol. 2002 Jul; 43(1):81-97.AE

Abstract

Fish were collected in late 1995 from 34 National Contaminant Biomonitoring Program (NCBP) stations and 13 National Water Quality Assessment Program (NAWQA) stations in the Mississippi River basin (MRB) and in late 1996 from a reference site in West Virginia. Four composite samples, each comprising (nominally) 10 adult common carp (Cyprinus carpio) or black bass (Micropterus spp.) of the same sex, were collected from each site and analyzed for organochlorine chemical residues by gas chromatography with electron capture detection. At the NCBP stations, which are located on relatively large rivers, concentrations of organochlorine chemical residues were generally lower than when last sampled in the mid-1980s. Residues derived from DDT (primarily p,p'-DDE) were detected at all sites (including the reference site); however, only traces (<or= 0.02 microg/g) of the parent insecticide (p,p'-DDT) were present, which indicates continued weathering of residual DDT from past use. Nevertheless, concentrations of DDT (as p,p'-DDE) in fish from the cotton-farming regions of the lower MRB were great enough to constitute a hazard to fish-eating wildlife and were especially high at the NAWQA sites on the lower-order rivers and streams of the Mississippi embayment. Mirex was detected at only two sites, both in Louisiana, and toxaphene was found exclusively in the lower MRB. Most cyclodiene pesticides (dieldrin, chlordane, and heptachlor epoxide) were more widespread in their distributions, but concentrations were lower than in the 1980s except at a site on the Mississippi River near Memphis, TN. Concentrations were also somewhat elevated at sites in the Corn Belt. Endrin was detected exclusively at the Memphis site. PCB concentrations generally declined, and residues were detected (>or= 0.05 microg/g) at only 35% of the stations, mostly in the more industrialized parts of the MRB.

Authors+Show Affiliations

U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Rd., Columbia, Missouri 65201, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12045878

Citation

Schmitt, C J.. "Organochlorine Chemical Residues in Fish From the Mississippi River Basin, 1995." Archives of Environmental Contamination and Toxicology, vol. 43, no. 1, 2002, pp. 81-97.
Schmitt CJ. Organochlorine chemical residues in fish from the Mississippi River basin, 1995. Arch Environ Contam Toxicol. 2002;43(1):81-97.
Schmitt, C. J. (2002). Organochlorine chemical residues in fish from the Mississippi River basin, 1995. Archives of Environmental Contamination and Toxicology, 43(1), 81-97.
Schmitt CJ. Organochlorine Chemical Residues in Fish From the Mississippi River Basin, 1995. Arch Environ Contam Toxicol. 2002;43(1):81-97. PubMed PMID: 12045878.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Organochlorine chemical residues in fish from the Mississippi River basin, 1995. A1 - Schmitt,C J, PY - 2002/6/5/pubmed PY - 2002/9/11/medline PY - 2002/6/5/entrez SP - 81 EP - 97 JF - Archives of environmental contamination and toxicology JO - Arch Environ Contam Toxicol VL - 43 IS - 1 N2 - Fish were collected in late 1995 from 34 National Contaminant Biomonitoring Program (NCBP) stations and 13 National Water Quality Assessment Program (NAWQA) stations in the Mississippi River basin (MRB) and in late 1996 from a reference site in West Virginia. Four composite samples, each comprising (nominally) 10 adult common carp (Cyprinus carpio) or black bass (Micropterus spp.) of the same sex, were collected from each site and analyzed for organochlorine chemical residues by gas chromatography with electron capture detection. At the NCBP stations, which are located on relatively large rivers, concentrations of organochlorine chemical residues were generally lower than when last sampled in the mid-1980s. Residues derived from DDT (primarily p,p'-DDE) were detected at all sites (including the reference site); however, only traces (<or= 0.02 microg/g) of the parent insecticide (p,p'-DDT) were present, which indicates continued weathering of residual DDT from past use. Nevertheless, concentrations of DDT (as p,p'-DDE) in fish from the cotton-farming regions of the lower MRB were great enough to constitute a hazard to fish-eating wildlife and were especially high at the NAWQA sites on the lower-order rivers and streams of the Mississippi embayment. Mirex was detected at only two sites, both in Louisiana, and toxaphene was found exclusively in the lower MRB. Most cyclodiene pesticides (dieldrin, chlordane, and heptachlor epoxide) were more widespread in their distributions, but concentrations were lower than in the 1980s except at a site on the Mississippi River near Memphis, TN. Concentrations were also somewhat elevated at sites in the Corn Belt. Endrin was detected exclusively at the Memphis site. PCB concentrations generally declined, and residues were detected (>or= 0.05 microg/g) at only 35% of the stations, mostly in the more industrialized parts of the MRB. SN - 0090-4341 UR - https://www.unboundmedicine.com/medline/citation/12045878/Organochlorine_chemical_residues_in_fish_from_the_Mississippi_River_basin_1995_ L2 - https://dx.doi.org/10.1007/s00244-002-1127-1 DB - PRIME DP - Unbound Medicine ER -