鄱阳湖入长江口流域水体重金属分布特征及人体健康风险评价  

Distribution of Heavy Metal and Human Health Risk Assessment of Water Bodies in the Basin of Poyang Lake Into the Yangtze River

作　　者：王志刚 詹华明 徐力刚[4] 郭豪坤 李佳乐 WANG Zhi-gang;ZHAN Hua-ming;XU Li-gang;GUO Hao-kun;LI Jia-le(Tianjin Railway Technical and Vocational College,Tianjin 300241,China;Tianjin Geology Research and Marine Geological Center,Tianjin 300170,China;The Fourth Geological Brigade of North China Geological Survey Bureau,Qinhuangdao 066000,China;Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;East China University of Technology,Nanchang 330013,China)

机构地区：[1]天津铁道职业技术学院,天津300241 [2]天津市地质研究和海洋地质中心,天津300170 [3]华北地质勘查局第四地质大队,河北秦皇岛066000 [4]中国科学院南京地理与湖泊研究所,江苏南京210008 [5]东华理工大学,江西南昌330013

出　　处：《长江流域资源与环境》2023年第6期1281-1290,共10页Resources and Environment in the Yangtze Basin

基　　金：国家重点研发计划项目(2018YFE0206400);国家自然科学基金项目(41971137,U2240224);2019年国家级高技能人才培训基地建设项目;江西省科技计划项目(20203CCD46006,20213AAG01012,20212BBG71002,20222BCD46002)。

摘　　要：通过采集鄱阳湖入长江口流域地表和地下水体,并对水体中重金属空间分布特征和来源进行分析,评价了水体重金属对人体健康风险。研究区水体主要阳离子为Ca^(2+),主要阴离子为HCO_(3)^(-)、SO_(4)^(2-),地下水水化学成分的主要成因为水岩相互作用。地表水重金属平均浓度高低顺序为Cr>Fe>Zn>Pb>Cu>Mn,Cr浓度变化幅度最大,Cr与Fe在地表水中重金属总浓度中的贡献率最大,分别为54.36%和19.50%。地下水重金属平均浓度高低顺序为Mn>Fe>Cr>Zn>Pb>Cu。研究区重金属污染可能来源于研究区周围冶炼厂排污废水和城市工业排放的污废水。地表水体和地下水体中,Cr对人体健康的风险均最高。地表水体中Cr对儿童的HQ_(der)、HI>1,Pb次之。地下水体中,Cr对人体的HQ_(der)、HI>1,Mn次之。研究为鄱阳湖流域地下水资源保护与饮用水水安全提供科学依据。Samples were collected in 2022 in the basin of Poyang Lake into the Yangtze River to analyze the spatial distribution characteristics and sources of heavy metals in the surface water and groundwater and to evaluate the risk of heavy metals to human health.The major cations and anions in the water from the study area were Ca^(2+),and HCO_(3)^(-)and SO_(4)^(2-),respectively.Water-rock interaction was the primary source of the chemical components of groundwater.The average concentration of heavy metals in the surface water was in the order of Cr>Fe>Zn>Pb>Cu>Mn.Cr concentration had the most significant variation range.Cr and Fe contributed the most to the total concentration of heavy metals in surface water,accounting for 54.36%and 19.50%,respectively.The average concentration of heavy metals in groundwater was in the order of Mn>Fe>Cr>Zn>Pb>Cu.Heavy metal pollution in the study area may come from wastewater discharged from smelters and urban industries.Cr had the highest risk to human health in both surface water and groundwater.The HQ_(der) and HI values of Cr in surface water were>1,followed by Pb.The HQ_(der) and HI values of Cr in groundwater were>1,followed by Mn.This study provides a scientific basis for the protection of groundwater resources and the safety of drinking water in Poyang Lake Basin.

关 键 词：鄱阳湖 水化学 重金属 健康风险评价 

分 类 号：X52[环境科学与工程—环境工程]