文献类型：期刊文献

中文题名：贵州省凯里市典型农村饮用水重金属污染特征及健康风险评价

英文题名：Heavy metal pollution characteristics and health risk assessment of typical rural drinking water in Kaili City,Guizhou Province

作者：伍名群 龙安玉 简永远 杨江 雷雪琴 吕婕梅 吴鹏

第一作者：伍名群

机构：[1]黔东南生态环境监测中心,贵州凯里556000;[2]贵州理工学院,贵州贵阳550008

第一机构：黔东南生态环境监测中心,贵州凯里556000

年份：2025

卷号：43

期号：3

起止页码：83-92

中文期刊名：贵州科学

外文期刊名：Guizhou Science

基金：黔东南州科技计划项目(黔东南科合J字[2021]70号);黔东南州科技计划项目(黔东南科合J字[2022]54号);黔东南州科技计划项目(黔东南科合J字[2023]117号)。

语种：中文

中文关键词：农村饮用水;重金属;污染特征;健康风险评价;凯里市

外文关键词：rural drinking water;heavy metals;pollution characteristics;health risk assessment;Kaili

摘要：为了解贵州省凯里市农村饮用水重金属特征并分析其对人体健康的影响,在枯水期和丰水期分别对凯里市11个典型农村饮用水源水体中17种重金属(As、Cd、Cr(VI)、Co、Cu、Zn、Hg、Pb、Fe、Mn、Mo、Be、Sb、Ni、Ba、V和Tl)进行监测,采用单因子评价法对水质状况进行评价,并运用美国国家环保局(USEPA)推荐的健康风险模型进行健康风险评价。监测结果表明,所监测的水体中重金属平均浓度大小为Ba>Fe>Zn>Mn>Cr(VI)>Pb>V>Cu>Sb>Mo>Ni>As>Co=Cd>Tl>Be=Hg,仅有1个水源水体中Pb浓度均超过《地下水质量标准》(GB/T 14848—2017)Ⅲ类标准限值,其余水源均达到或优于标准限值,重金属浓度在水期表现为枯水期>丰水期。空间分布特征表明,Cr(VI)、Hg、Be、As、Co、Cu、Sb、Ni、V和Tl等10种重金属无明显空间差异;Cd、Zn、Pb、Fe、Mn、Mo和Ba等7种重金属空间差异较大。相关性分析表明,As与Co、Fe、Mn, Cd与Zn、Pb, Co与Fe、Mn、Cu、Ni, Cu与Fe、Mn, Zn与Pb, Fe与Mn、Ni, Mn与Ni, Mo与Ba可能具有相同或相似的迁移转化过程。健康风险评价结果表明,重金属引起儿童的致癌风险和非致癌风险均高于成人,致癌重金属的危害风险远高于非致癌重金属的危害风险,Cr(VI)和As为各水源致癌风险主要影响因子,应加以管控。
In order to understand the characteristics of heavy metals in rural drinking water in Kaili City,Guizhou Province and analyze their impact on human health,17 kinds of heavy metals(As,Cd,Cr(VI),Co,Cu,Zn,Hg,Pb,Fe,Mn,Mo,Be,Sb,Ni,Ba,V,and T1)were monitored in 11 typical rural drinking water sources in Kaili City during dry and wet seasons.The water quality was evaluated by using single factor evaluation method,and the health risk model recommended by the US Environmental Protection Agency(USEPA)was used for health risk assessment.The monitoring results indicate that the average concentration of heavy metals in the monitored water bodies is Ba>Fe>Zn>Mn>Cr(VI)>Pb>V>Cu>Sb>Mo>Ni>As>Co=Cd>Tl>Be=Hg.Only one water source has a Pb concentration that exceeds the Class III standard limit specified in the groundwater quality standard GB/T 14848-2017;all other water sources have reached the standard limit.The concentration of heavy metals in dry season is higher than that in wet season.The spatial distribution characteristics indicate that there is no significant spatial difference for Cr(VI),Hg,Be,As,Co,Cu,Sb,Ni,V,and Tl,while there is significant spatial difference for Cd,Zn,Pb,Fe,Mn,Mo,and Ba.Correlation analysis shows that As may have similar migration and transformation processes with Co,Fe and Mn,Cd with Zn and Pb,Co with Fe,Mn,Cu and Ni,Cu with Fe and Mn,Zn with Pb,Fe with Mn and Ni,Mn with Ni,Mo with Ba.The results of the health risk assessment indicate that the carcinogenic and non-carcinogenic risks caused by heavy metals to children are higher than those to adults.The risk of carcinogenic heavy metals is much higher than that of non-carcinogenic heavy metals.Cr(VI)and As are the main influencing factors of carcinogenic risks in various water sources and should be controlled.