State Environmental Protection Key Laboratory of Dioxin Pollution Control, National Research Center for Environmental Analysis and Measurement, Beijing 100029, China.
Environmental Development Center, Ministry of Ecology and Environment, Beijing 100029, China.
Int J Environ Res Public Health. 2023 Mar 14;20(6):5107. doi: 10.3390/ijerph20065107.
A systematic investigation was conducted on the emission of hexachlorobutadiene (HCBD) from two tetrachloroethylene factories that used the acetylene method (F1) and the tetrachloride transformation method (F2). The levels of HCBD in the air for F1 were found to be in the range of 1.46-1170 µg/m, whereas F2 had levels in the range of 1.96-5530 µg/m. Similarly, the levels of HCBD in the soil for F1 were found to be in the range from 42.2 to 140 µg/kg, whereas F2 had levels in the range from 4.13 to 2180 µg/kg. Samples obtained from the air, soil, and sludge in the reaction area of the tetrachloroethylene factories in China showed high levels of HCBD. The F1 method unintentionally produced more HCBD than the F2 method during tetrachloroethylene production, leading to greater harm. The results of the risk assessment suggested the presence of harmful health effects on workers in the workplace. The investigation findings highlight the need for improved management systems to ensure the safe production of tetrachloroethylene.
对使用乙炔法（F1）和四氯化碳转化法（F2）的两家四氯乙烯工厂排放六氯丁二烯（HCBD）的情况进行了系统调查。结果表明，F1 工厂空气中 HCBD 的浓度范围为 1.46-1170µg/m，而 F2 工厂空气中 HCBD 的浓度范围为 1.96-5530µg/m。同样，F1 工厂土壤中 HCBD 的浓度范围为 42.2-140µg/kg，F2 工厂土壤中 HCBD 的浓度范围为 4.13-2180µg/kg。从中国四氯乙烯工厂反应区的空气、土壤和污泥中采集的样品显示 HCBD 含量较高。在四氯乙烯生产过程中，F1 法比 F2 法意外地产生了更多的 HCBD，从而造成更大的危害。风险评估结果表明，工作场所的工人可能存在健康危害。调查结果强调需要改进管理系统，以确保四氯乙烯的安全生产。
