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Evaluation of lipid‐containing semipermeable membrane devices for monitoring organochlorine contaminants in the Upper Mississippi river
Author(s) -
Ellis Geoffrey S.,
Rostad Colleen E.,
Huckins James N.,
Schmitt Christopher J.,
Petty Jimmie D.,
Maccarthy Patrick
Publication year - 1995
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620141109
Subject(s) - environmental chemistry , chemistry , contamination , fish <actinopterygii> , chromatography , semipermeable membrane , analyte , membrane , fishery , ecology , biology , biochemistry
Organochlorine contaminants sequestered in lipid‐containing semipermeable membrane devices (SPMDs) were compared to those found in tangential‐flow ultrafilter permeates as part of a pilot study at 10 sites in the Upper Mississippi River system. Caged and feral fish from three primary sites were also analyzed for comparison. Concentrated organochlorine (OC) compounds were readily extracted from the SPMDs by dialysis into hexane, and samples were analyzed by gas chromatography‐negative chemical ionization‐mass spectrometry. Fish and water samples were processed by conventional methods. Reasonable agreement was found between analyte SPMD‐derived water concentrations and measured values of ultrafilter permeates; however, concentrations of the same analytes in caged fish did not appear to be proportional to water concentrations derived from SPMDs and ultrafilter permeates. The greatest number of OC compounds was detected in SPMDs; fewer were detected in caged fish and feral fish.