Partial Pressures of PCB-11 in Air from Several Great Lakes Sites
Partial Pressures of PCB-11 in Air from Several Great Lakes Sites
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DOI：
10.1021/es900919d
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发表时间：
2009-09-01
影响因子：
11.4
通讯作者：
Hites, Ronald A.
中科院分区：
文献类型：
--
作者：
Basu, Ilora;Arnold, Karen A.;Hites, Ronald A.
据报告，水和空气中的3，3 '-二氯联苯（PCB-11）浓度相对较高，有人认为这种化合物并非来自商用多氯联苯产品。我们在这里报告的数据大气分压的PCB-11和总PCB在五个地点周围的五大湖，并表明，总PCB和PCB-11跟踪人口密度。此外，我们表明，除了芝加哥，在我们的采样点的多氯联苯同系物模式是最好的代表Aroclor 1242，在芝加哥，该模式是最好的代表Aroclor 1242和1254的1：1混合物。2004年1月至2007年12月期间，空气中PCB-11的含量没有变化，可能除了Sturgeon Point纽约以外。PCB-11的来源可能与黄色颜料有关，也可能与氯化程度较高的多氯联苯同系物的降解有关，或者两者都有。
Relatively high concentrations of 3,3'-dichlorobiphenyl (PCB-11)have been reported in water and air, and it has been suggested that this compound did not come from commercial PCB products. We report here data on atmospheric partial pressures of PCB-11 and of total PCBs at five sites around the Great Lakes and demonstrate that both total PCBs and PCB-11 track human population density. In addition, we show that, with the exception of Chicago, the PCB congener pattern at our sampling sites is best represented by Aroclor 1242; in Chicago, the pattern is best represented by a 1:1 mixture of Aroclors 1242 and 1254. With the possible exception of Sturgeon Point New York, the levels of PCB-11 in air have not changed between January 2004 and December 2007. The source of PCB-11 may be related to yellow pigments, to the degradation of more highly chlorinated PCB congeners, or to both.