Formation Mechanism of by-Product PCBs in the P-DCB Production
对二氯苯生产中的多氯联苯副产物排放与生成机制研究

A typical p-DCB production process was selected in this study. A series of p-DCB product samples,1 Japanese sample and 1 chlorobenzene sample were collected and analyzed for by-product polychlorinated biphenyls (PCBs). It is a common phenomenon that by-product PCBs exists in the p-DCB production process. The PCBs levels in the p-DCB samples were 62-781 ng/g and the highest WHO-TEQ in the process was 0.24 ng/g,while the PCBs level in the Japanese sample reached 881 ng/g. PCB31 was the dominate PCB congener i...