Toxicological significance of non-, mono- and di-ortho-substituted polychlorinated biphenyls in oysters from Galveston and Tampa Bays

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dc.acquisition-srcDownloaded from-Academic Search Premieren_US
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dc.contributor.authorSafe SHen_US
dc.contributor.authorWade TLen_US
dc.contributor.authorBrooks JMen_US
dc.contributor.authorSericano JLen_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:19:07Z
dc.date.available2010-02-15T17:19:07Z
dc.date.issued1994 Noven_US
dc.degreeen_US
dc.description1797-en_US
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dc.description.abstractAbstract: Concentrations of non-ortho (77, 126, and 169), mono-ortho (105 and 118) and di-ortho (128 and 138) -substituted PCB congeners were measured in oysters from Galveston and Tampa bays, and reported toxic equivalent factors were used to assess their toxicity. Most of the relative toxicity encountered in the oysters analyzed during this study was due to the presence of planar non-ortho-PCBs (53.8-94.3%), particularly congener 126. In contrast, the contribution of di-ortho-substituted PCB congeners to the total relative toxicity of the samples was negligible (<1%). On average, the contribution of each of these non-, mono-, and di-ortho-substituted PCB congeners to the total toxicity encountered in oysters from Galveston and Tampa bays were 126 > 118 greater than or equal to 169 greater than or equal to 105 > 77 >> 138 > 128 and 126 > 118 > 169 greater than or equal to 77 > 105 >> 138 > 128, respectively. Based on the reported lower clearance rates of non-ortho- and mono-ortho-substituted PCB congeners compared to other congeners within the same chlorination level, contaminated oysters that are depurated in clean environments will lower their total PCB concentrations, but their original toxicity may not be proportionally reduced.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23726
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dc.notesAccession Number: 8283224; Safe, S. H.; Wade, T. L.; Brooks, J. M.; Sericano, J. L.; Source Information: Nov1994, Vol. 13 Issue 11, p1797; Subject Term: TOXICOLOGY; Subject Term: POLYCHLORINATED biphenyls; Subject Term: OYSTERS; Subject Term: MEXICO, Gulf of; Author-Supplied Keyword: Florida (Tampa Bay); Author-Supplied Keyword: Gulf of Mexico; Author-Supplied Keyword: Oyster; Author-Supplied Keyword: Polychlorinated biphenyl, non-, mono- and di-ortho-substituted; Author-Supplied Keyword: Texas (Galveston Bay); Number of Pages: 0p; Document Type: Articleen_US
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dc.relation.ispartofseries51403.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectPCBSen_US
dc.subjectTOXICITYen_US
dc.subjectDEPURATIONen_US
dc.subjectOYSTERSen_US
dc.subjectGULF OF MEXICOen_US
dc.titleToxicological significance of non-, mono- and di-ortho-substituted polychlorinated biphenyls in oysters from Galveston and Tampa Baysen_US
dc.typeGENen_US
dc.universityen_US
dc.vol-issue13(11)en_US

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