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  • Title: Evidence of degradation of polybrominated biphenyls in soil samples from Michigan.
    Author: Hill RH, Patterson DG, Orti DL, Holler JS, Needham LL, Sirmans SL, Liddle JA.
    Journal: J Environ Sci Health B; 1982; 17(1):19-33. PubMed ID: 6279720.
    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 had the greatest degree of degradation. Principal degradation products include 2,3', 4,4', 5-pentabromobiphenyl, 2,2', 4,4', 5-pentabromobiphenyl 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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