Evidence of degradation of polybrominated biphenyls in soil samples from michigan |
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| Authors: | Robert H Hill Jr Donald G Patterson Donna L Orti James S Holler Larry L Needham Sandra L Sirmans |
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| Institution: | U. S. Department of Health and Human Services, Public Health Service , Centers for Disease Control, Center for Environmental Health, Clinical Chemistry Division, Toxicology Branch , Atlanta, Georgia, 30333 |
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| Abstract: | Abstract Soil samples obtained from the former polybrominated biphenyls (PBB) manufacturing site in Michigan were analyzed by gas chromatography and gas chromatography with mass spectrometric detection. The results indicate significant degradation of the PBB residue in the soil sample. The soil sample with the highest concentration of PBB has the greatest degree of degradation. Principal degradation products include 2,3’,4,4’,5‐pentabromo‐biphenyl, 2,2’,4,4’,5‐pencabromobiphenyl and two unidentified tetrabromobiphenyls. The degradation pattern observed supports a photochemical decomposition mechanism. These degraded residues may be more toxic than the original Firemaster residues. The implications of the results are discussed. |
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| Keywords: | Polybrominated Biphenyls PBB Soil Degradation Photolysis Michigan |
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