Polychlorinated dibenzofurans and dibenzo-p-dioxins in subsurface soil, superficial dust, and air extracts from a contaminated landfill

Extracts of soil, dust and air from a National Priorities List Landfill have been found to contain distinct profiles of polychlorinated biphenyls (PCBs). The different extracts show subtle differences in toxicities and the soil extract has been shown to cause both Ah receptor mediated effects and Ah...

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Bibliographic Details
Published in:Archives of environmental contamination and toxicology 1996-08, Vol.31 (2), p.271-276
Main Authors: HANSEN, L. G, O'KEEFE, P. W
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Air Pollutants - isolation & purification
Animal, plant and microbial ecology
Animals
Applied ecology
Benzofurans - analysis
Benzofurans - isolation & purification
Biological and medical sciences
Chromatography, Gas
Dibenzofurans, Polychlorinated
Dust - analysis
Ecotoxicology, biological effects of pollution
Female
Fundamental and applied biological sciences. Psychology
Polychlorinated Dibenzodioxins - analogs & derivatives
Polychlorinated Dibenzodioxins - analysis
Polychlorinated Dibenzodioxins - isolation & purification
Rats
Soil Pollutants - analysis
Soil Pollutants - isolation & purification
Terrestrial environment, soil, air
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Summary:Extracts of soil, dust and air from a National Priorities List Landfill have been found to contain distinct profiles of polychlorinated biphenyls (PCBs). The different extracts show subtle differences in toxicities and the soil extract has been shown to cause both Ah receptor mediated effects and Ah receptor independent effects in immature female rats. Evidence of open burning at the site dictated quantitation of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) for a more accurate tabulation of dioxin equivalencies. High volume air sampling on XAD-2 resin cartridges captured trace amounts of PCDFs and no detectable PCDDs. Acetone:Hexane (1:1) extracts of soil and dust contained 762 microg/ml and 250 microg/ml PCDFs, respectively, and less than 10% as much PCDD. Subsequent benzene:methylene chloride (1:1) extracts were enriched in coplanar compounds relative to total PCBs. PCDF:PCB ratios in all extracts were higher than in the rice oils contaminated with heated PCBs in the Yusho and Yu-Cheng incidents. No 2,3,7,8-TCDD was detected, and total PCB+PCDD+PCDF toxic equivalencies were dominated by the high proportions of PCDFs.
ISSN:0090-4341
1432-0703
DOI:10.1007/bf00212377