3,3'-二氯联苯是一种与多氯联苯工业生产无关的化合物，由于其具有特殊的污染源，近年来受到了重点关注。本项目将首次系统地研究3,3'-二氯联苯的污染源、环境行为和环境健康效应。围绕颜料黄及其工业生产过程，研究颜料黄的生产对于周围环境造成的3,3'-二氯联苯及一般多氯联苯的污染问题。选择典型城市、乡村、电子垃圾拆解区作为研究区域，拟从不同区域大气、土壤、农作物、生物等环境介质中3,3'-二氯联苯及一般多氯联苯的污染特征、环境多介质迁移、分配、归趋及生物富集等方面开展研究。围绕颜料黄的生产对于周围环境、职业暴露人群及周围居民造成的生态和健康影响，进一步评价其潜在的生态风险和健康风险。研究结果将揭示3,3'-二氯联苯的主要污染源及一般多氯联苯的新污染源问题，将有助于我们全面掌握3,3'-二氯联苯及一般多氯联苯化合物我国典型区域环境中的污染现状，同时为评估污染物带来的环境风险和健康风险提供科学依据

3,3'-dichlorobiphenyl is not produced during the production and use of commercial polychlorinated biphenyls (PCB) mixtures. It has aroused great concerns in the recent years due to its specific emission sources. This project aims to investigate sources, environmental behavior and environmental health risks of 3,3'-dichlorobiphenyl for the first time. First, the emission of 3,3'-dichlorobiphenyl and other PCBs by pigment yellow product and its industrial manufacture will be investigated in detail. Second, typical urban area, rural area and e-waste dismantling area will be selected. The contamination characteristics, environmental media transport, partition, fate and bioaccumulation of 3,3'-dichlorobiphenyl and other PCBs will be studied in various environmental media including atmosphere, soil, crops and biological samples. Furthermore, the potential environmental and human health risks of 3,3'-dichlorobiphenyl and other PCBs, which were produced in the industrial manufacture of pigment yellow will be assessed by analyzing the environmental samples and the human samples from employment workers and the surrounding residents. The expecting results from this project will discover the main sources of 3,3'-dichlorobiphenyl and the new sources of other PCBs caused by the manufacture and use of pigment yellow. It will help for us to fully obtain the current contamination status of 3,3'-dichlorobiphenyl and other PCBs in the environmental media in China. It also provide scientific evidence and support for assessing the potential environmental and human health risks of 3,3'-dichlorobiphenyl and other PCB pollutants.