Use of the Semipermeable Membrane Device (Spmd) to Sample Polycyclic Aromatic Hydrocarbon Pollution In A Lotic System |
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Authors: | Jon A. Lebo James L. Zajicek Carl E. Orazio Jimmie D. Petty James N. Huckins Ernest H. Douglas |
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Affiliation: | 1. U. S. Department of the Interior , National Biological Service, Midwest Science Center , Columbia, Missouri, 65201, USA;2. U.S. Department of the Interior , Fish and Wildlife Service, Fish and Wildlife Enhancement Office , Daphne, Alabama, 36526, USA |
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Abstract: | Abstract Relative concentrations of aqueous polycyclic aromatic hydrocarbons (PAH) were investigated in an urban creek. Samples were obtained at five sites within a 600-m segment of the creek that is critical habitat for an endangered species of fish. the sampling technique entailed immersion of semipermeable membrane devices (SPMDs) in the water for intervals as long as 64 d. SPMDs are passive, in situ, mtegrative samplers of bioavailable (truly dissolved) PAH and other hydrophobic organic contaminants. Two point sources of PAH to the 600-m segment of the creek were differentiated. Aqueous concentrations were found to wane dramatically over the relatively short section of the creek between the point sources. All samples were almost devoid of alkyl-substituted PAH, indicating that the ultimate sources were probably of pyrogenic nature. |
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Keywords: | bioconcentration semipermeable membrane device SPMD sampling PAH |
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