重庆市涪陵工业园区优先评估化学品名录筛查

Screening on the List of Priority Assessment Chemicals in Fuling Industrial Park, Chongqing

优先控制化学品固有危害性大,持久性强,对生态环境和人体健康造成了巨大威胁。因此,需要确定优先次序和排名清单以筛选目标化学品,作为化学品风险评估和管控的依据。该文基于化学品的危害性、持久性和暴露指标建立了优先评估化学品的赋分筛选技术,研究和筛查了重庆市涪陵工业园区优先评估化学品名录。涪陵工业园区化学品基本信息调查研究结果表明,涪陵区的33家主要化工企业涉及了28个不同行业,其中有机化学原料制造、磷肥制造业以及氨纶纤维制造业占据主导。从33家企业中筛查出221种化学品,这些化学品在国内外化学品管控名录中共匹配检索到35种,其中同时被2个及以上名录收录的化学品共有18种,这些物质被作为优先评估化学品的候选物质。筛查研究结果表明,三氯甲烷、四氯乙烯、四氟乙烯、甲醛、甲醇以及二氯甲烷的危害性、持久性、生物蓄积性以及暴露评估总分超过12分,二甲基甲酰胺、苯、1,2-二氯乙烷以及正己烷等4个物质为9分,其余8种物质总评分均低于9分。根据综合赋分结果,超过12分的上述6种化学品被列为涪陵地区优先评估化学品,并在下一步研究工作开展精细化的环境风险评估和制定相应的风险防控措施。

Priority control of chemicals is inherently harmful and persistent,posing a major threat to the ecological environment and human health.Therefore,prioritization and ranking lists need to be identified to screen target compounds as a basis for chemical risk assessment and control.Establishing scoring and screening techniques for priority assessment chemicals based on hazard,persistence and exposure.Studied and screened the list of priority assessment chemicals in Fuling Industrial Park,Chongqing.The research results of chemical basic information in Fuling industrial park showed that the 33 major chemical companies in Fuling district involved in 28 different industries,organic chemical raw material manufacturing,phosphate fertilizer manufacturing and spandex fiber manufacturing dominate.221 chemicals been screened from these thirty-three companies,and then 35 of these chemicals were matched and searched in the domestic and international chemical control list.Among them,18 were listed in 2 or more lists.These substances are used as a list of candidate substances for priority assessment of chemicals.The results of the screening study on the list of priority assessment chemicals in Fuling district showed that the hazard,persistence,bioaccumulation and exposure assessment scores of chloroform,tetrachloroethylene,tetrafluoroethylene,formaldehyde,methanol and methylene chloride exceeded 12 scores,dimethylformamide,benzene,1,2-dichloroethane and n-hexane were acquired 9 scores,and the total scores of the other 8 substances were all below 9.According to the comprehensive score results,the above 6 chemicals which have been acquired more than 12 scores will be listed as priority evaluation chemicals in Chongqing Fuling district,and these will be carried out detailed environmental risk assessment and develop corresponding risk prevention and control measures in the next working steps.