密歇根州土壤样本中多溴联苯降解的证据。

Evidence of degradation of polybrominated biphenyls in soil samples from Michigan.

作者信息

Hill R H, Patterson D G, Orti D L, Holler J S, Needham L L, Sirmans S L, Liddle J A

出版信息

J Environ Sci Health B. 1982;17(1):19-33. doi: 10.1080/03601238209372298.

DOI:10.1080/03601238209372298

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.

摘要

对从密歇根州前多溴联苯（PBB）制造场地采集的土壤样本进行了气相色谱分析以及气相色谱 - 质谱检测分析。结果表明土壤样本中的PBB残留有显著降解。PBB浓度最高的土壤样本降解程度最大。主要降解产物包括2,3',4,4',5 - 五溴联苯、2,2',4,4',5 - 五溴联苯以及两种未鉴定的四溴联苯。观察到的降解模式支持光化学分解机制。这些降解后的残留物可能比原来的Firemaster残留物毒性更大。文中讨论了这些结果的意义。