Polychlorinated Dibenzo-p-dioxins and Dibenzofurans Associated

Wood-Preserving Chemical Sites: Biomonitoring with Pine Needles ... phenol wood-preserving sites detected relatively high ... air” regions of the co...
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Environ. Sci. Technol. 1992, 26, 394-396

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Received for review May 2,1991. Revised manuscript received August 8,1991. Accepted August 21,1991. Funding was provided by the U.S. Nuclear Regulatory Commission under Contract Grants NRC-04-89-353 and NRC-04-90-115. Dr. Stephen A. McGuire is the monitor for both grants.

Polychlorinated Dibenzo-p-dioxins and Dibenzofurans Associated with Wood-Preserving Chemical Sites: Biomonitoring with Pine Needles Stephen Safe,” Kirk W. Brown, Klrby C. Donnelly, Cathy S. Anderson, and Karl V. Markiewlcz

Departments of Veterinary Physiology and Pharmacology and Soil and Crop Sciences, Texas A&M University, College Station, Texas 77843 Michael S. McLachian, Anton Reischl, and Otto Hutzinger

Chair of Ecological Chemistry and Geochemistry, University of Bayreuth, P.O. Box 101251, 8580, Bayreuth, FRG Gas chromatography-mass spectrometry (GC-MS) analysis of pine needle extracts from two pentachlorophenol wood-preserving sites detected relatively high overall concentrations of polychlorinated dibenzo-p-dioxins (PCDDs; 1798 and 935 ppt) and dibenzofurans (PCDFs; 310 and 141 ppt). The dominant congener was octachlorodibenzo-p-dioxin (Cl,DD), the CPCDDs > CPCDFs, and relatively low levels of the tetra- and pentachlorodibenzofurans (CC1,DFs and C1,DFs) were detected. This pattern was similar to that observed for the PCDD and PCDF contaminants detected in commercial pentachlorophenol and significantly different from the pattern observed for combustion-derived PCDDs and PCDFs. The levels of these compounds were significantly lower in two “pristine” areas in the Kootenai National Forest and the Glacier-Waterton International Peace Park (i.e., CPCDDs was