黄河兰州段邻苯二甲酸酯类有机污染物健康风险评价  

Water Environmental Health Risk Assessment of Phthalic Acid Esters in Lanzhou Reach of Yellow River

作　　者：董继元[1] 王式功[2,3] 尚可政[2,3] 

机构地区：[1]兰州大学西部环境教育部重点实验室,兰州730000 [2]兰州大学半干旱气候变化教育部重点实验室,兰州730000 [3]兰州大学大气科学学院,兰州730000

出　　处：《农业环境科学学报》2010年第5期963-968,共6页Journal of Agro-Environment Science

基　　金：国家自然科学基金(40675077);国家"十一五"科技支撑计划项目(2007BAC03A10;2008BAC40B04-6)

摘　　要：近年来黄河兰州段的邻苯二甲酸酯类污染日渐严重,为研究黄河兰州段水体中邻苯二甲酸酯类有机污染物对人体产生的潜在健康危害风险,根据黄河兰州段2005年5个采样点水质监测数据,应用美国环境保护局(USEPA)的健康风险评价方法对邻苯二甲酸酯类有机污染物通过饮水和皮肤接触2种途径进入人体的健康风险进行了初步评价。结果表明,黄河兰州段邻苯二甲酸酯类有机污染物的非致癌风险指数值均小于1,其中邻苯二甲酸二(2-乙基己基)酯的非致癌风险指数值相对较高,在10-2数量级,偏高于邻苯二甲酸正丁酯。从位于兰州市饮用水水源地范围内的3号采样点(S3)采集的水样中邻苯二甲酸酯类有机污染物的非致癌风险指数值偏高,具有较高的健康风险。不同暴露途径健康风险的对比表明,饮水是水体中有毒有机污染物危害人体健康的最主要途径,其对人体健康总风险的贡献远大于洗浴皮肤暴露。常规的自来水处理工艺不能有效地去除源水中微量PAEs等有机污染物,因此地面水特别是饮用源水PAEs污染具有较大的健康风险。与国内其他地区相比,黄河兰州段邻苯二甲酸酯类有机污染物的非致癌风险亦较高。The phthalic acid esters（PAEs）pollution of the Lanzhou Reach of Yellow River area has been more and more serious in recent years.In order to investigate potential health risk to human bodies caused by organic pollutants of phthalic acid esters in waters there,based on water quality monitoring data from 5 sampling sites in the Lanzhou reach of the Yellow River in 2005,a preliminary assessment of the health risk caused by ingestion from drinking water and dermal contact with shower water was performed by using a health risk method of USEPA.The results showed that the non-carcinogenic risk index values of organic pollutants of phthalic acid esters were far below 1.The non-carcinogenic risks of di-2-ethylhexyl phthalate were around 10-2,higher than dibutyl phthalate.The non-carcinogenic risk index value of phthalic acid esters at sampling site 3（S3）located in drinking water sources of Lanzhou City was relatively high,and might carry a higher health risk.The comparison of health risks of different routes of exposure showed that the drinking water was the main route of PAEs endangering the human health,its contribution to the total risk was much higher than the dermal contact with shower water.The routine treatment technology of tap water could not remove effectively the trace organic pollutants（such as PAEs,etc）.Therefore,the PAEs pollution of surface water carried a great health risk,especially when surface water was used as a drinking-water resource.Compared with other regions in China,the non-carcinogenic risk of phthalic acid esters in the Lanzhou Reach of the Yellow River were much higher.

关 键 词：黄河 水环境 邻苯二甲酸酯类 健康风险评价 

分 类 号：X820.4[环境科学与工程—环境工程]