Atmospheric emission of polychlorinated biphenyls from multiple industrial thermal processes.
Atmospheric emission of polychlorinated biphenyls from multiple industrial thermal processes.
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DOI：
10.1016/j.chemosphere.2012.11.008
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发表时间：
2013-03
期刊：
影响因子：
8.8
通讯作者：
Guorui Liu;M. Zheng;M. Cai;Z. Nie;Bing Zhang;Wenbin Liu;B. Du;Shujun Dong;Jicheng Hu;
中科院分区：
文献类型：
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作者：
Guorui Liu;M. Zheng;M. Cai;Z. Nie;Bing Zhang;Wenbin Liu;B. Du;Shujun Dong;Jicheng Hu;
在这项研究中，进行了现场测量，以估计和表征大气中的多氯联苯（PCBs）的排放水平和配置文件从多个工业热过程。研究了23家工厂的五种热过程中多氯联苯的排放水平和分布，并与我们之前研究中报告的八种过程进行了比较。相关性分析，以确定一个标志同系物的排放的PCBs。CB-118与多氯联苯之间存在显著的相关性（R2=0.65，p<0.01），提示CB-118是多氯联苯排放的良好标记物。比较了13种热处理过程中PCBs的排放特征，为研究PCBs的源-受体关系和确定PCBs的具体来源提供了依据。为了确定控制来源的优先顺序，比较了13个工业热源中多氯联苯的浓度。二次炼锌和热线回收产生的PCB浓度比其他来源高1 ~ 3个数量级，应优先控制。最后，总结了13个工业污染源中PCBs的大气排放因子，为建立PCBs综合排放清单提供了依据。
In this study, field measurements were conducted to estimate and characterize the atmospheric emission levels and profiles of polychlorinated biphenyls (PCBs) from multiple industrial thermal processes. The emission levels and profiles of PCBs from five types of thermal processes at twenty-three plants were studied and compared with eight processes reported in our previous studies. Correlation analysis was preformed to identify a marker congener for emission of ΣPCB. A significant correlation was observed between congener CB-118 and ΣPCB (R2=0.65 and p<0.01), which suggests that CB-118 is a good marker congener for emission of ΣPCB. The profiles of PCBs emitted from the thirteen thermal processes were compared, and this information could be used for studying source–receptor relationships and identifying the specific sources of PCBs. To prioritize the sources for control, the concentrations of PCBs from thirteen industrial thermal sources were compared. The PCB concentrations from secondary zinc smelting and thermal wire reclamation were about one to three order magnitude higher than those of other sources, which suggests that these two sources be given priority in PCB source control. Finally, the atmospheric emission factors of PCBs from the thirteen industrial sources were summarized, and these data will be useful for developing an integrated emission inventory of PCBs.