太湖流域铜锈环棱螺体内重金属富集量及膳食风险评价  

Accumulations of Heavy Metals and Dietary Risk Assessment of Bellamya aeruginosa in the Lake Taihu Basin

作　　者：邓可伟 蒋豫 李颖 宋翠萍 邹亮华 龚志军[2] 蔡永久[2] 鲁顺保[1] DENG Ke-wei;JIANG Yu;LI Ying;ZOU Liang-hua;GONG Zhi-jun;LU Shun-bao;CAI Yong-jiu(College of Life Sciences,Jiangxi Normal University,Nanchang330022,China;Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 21008,China;Jiangsu Provincial Ecological Assessment Center(Jiangsu Provincial Management Center for Emissions Registration and Exchange),Nanjing 210036,China;Jiangsu Surveying and Design Institute of Water Resources Co.,Ltd.,Yangzhou 225127,China)

机构地区：[1]江西师范大学生命科学学院,江西南昌330022 [2]中国科学院南京地理与湖泊研究所,江苏南京210008 [3]江苏省生态环境评估中心(江苏省排污权登记与交易管理中心),江苏南京210036 [4]江苏省水利勘测设计研究院有限公司,江苏扬州225127

出　　处：《长江流域资源与环境》2022年第7期1595-1604,共10页Resources and Environment in the Yangtze Basin

基　　金：国家自然科学基金项目(32071572,31760136);中国科学院青年创新促进会项目(2020316)。

摘　　要：对太湖流域6个水系铜锈环棱螺腹足肌肉团Cu、Zn、Pb、Cr、Cd、As、Hg富集量进行分析,运用单因子污染指数法评价其受污染程度,并分别采用平均每周/每月摄入量法和目标危害系数法(THQ)对其膳食风险进行评估,旨在为居民铜锈环棱螺消费安全提供参考。结果表明,洮滆水系的Cu、Zn、Pb、Cr元素富集量平均值最高,分别为112.108、248.625、4.422、7.791 mg/kg,苕溪水系Cd、As、Hg元素富集量平均值最高,分别为0.290、2.943、0.059 mg/kg。THQ评价结果显示各水系铜锈环棱螺除了As外无单一重金属潜在健康风险,但多种重金属复合暴露的健康风险(TTHQ)结果显示各水系铜锈环棱螺重金属TTHQ值均大于1,As的贡献率均超过80%,表明居民长期食用环棱螺具有重金属复合暴露健康风险及As单一重金属潜在健康风险,重金属复合暴露风险来源于As元素的污染。五个水系潜在重金属复合暴露风险排序为:洮滆水系>苕溪水系>沿江水系>黄浦江水系>杭州湾-长江口水系。To provide food safety information of Bellamya aeruginosa in Lake Taihu Basin,the population from six water systems of the Lake Taihu Basin were collected for analyzing their bioaccumulation characteristics of seven heavy metals(Cu,Zn,Pb,Cr,Cd,As and Hg) in foot masses.The pollution and dietary risk of heavy metals were assessed using three methods,including the single factor pollution index,the weekly/monthly average intakes and the target hazard quotient(THQ).The results showed that the average contents of Cu,Zn,Pb,and Cr in the Taoge water system were highest,which were 112.108,248.625,4.422,and 7.791 mg/kg,respectively.The average contents of Cd,As,and Hg in Tiaoxi water system was highest,which were 0.290,2.943,and 0.059 mg/kg,respectively.The results of THQs showed that there is no single heavy metal potential health risk in each water system,with except As,but the total target hazard quotient results showed that the TTHQ value of heavy metals in each water system was greater than 1,and the contribution rate of As exceeds 80%,indicating there were potential health risks of B.aeruginosa via long-term consumption by residents in Lake Taihu basin and the risk of total target hazard quotient mainly ascribed the pollution of As element.The ranking of the total target hazard quotient in the five water systems was Taoge water system> Tiaoxi water system> Yanjiang water system> Huangpu River water system> Hangzhou Bay-Yangtze River Estuary water system.

关 键 词：太湖流域 铜锈环棱螺 重金属污染 膳食风险 

分 类 号：X52[环境科学与工程—环境工程] X820.4