Biodepuration of polynuclear aromatic hydrocarbons from a bivalve mollusk, Mercenaria mercenaria L

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Environmental Science & Technology, ISSN: 0013-936X, Vol: 25, Issue: 8, Page: 1453-1461

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Tanacredi, John T., Ph.D.; Cardenas, Raul R.
American Chemical Society (ACS)
Chemistry; Environmental Science; mercenaria mercenaria; PAHs; WCCO; waste crankcase oil; Aquaculture and Fisheries; Biodiversity; Biology; Environmental Chemistry; Environmental Health and Protection; Environmental Indicators and Impact Assessment; Environmental Monitoring; Marine Biology; Sustainability; Terrestrial and Aquatic Ecology
article description
Mercenaria mercenaria, exposed in vitro for 48 h to nine parent polynuciear aromatic hydrocarbons (PAHs) found in waste crankcase oil (WCCO) and analyzed by multiparametric analysis over a 45-day depuration period in an activated carbon filtration aquaria system, did not depurate PAHs, but rather maintained them at detectable levels. Uptake of PAHs was shown to be directly related to clam weight. A cluster analysis of empirical results reaffirmed a biostabilization in PAH groupings in clam tissue over a 45-day depuration period and exhibited no evidence of a decreasing trend in total PAHs when subjected to ANOVA. Due to the commercial importance of hard-shell clams, the practices of clam depuration and clam relaying are reviewed in light of potential long-term public health exposures to low-level xenobiotics and the implications for human consumers. © 1991, American Chemical Society. All rights reserved.