中文关键词龙子祠泉地下水金属元素多元统计健康风险岩溶大泉 英文关键词Longzici Springgroundwatermetal elementsmultivariate statisticshealth riskkarst spring

作者	单位	E-mail
谢浩	中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 桂林 541004 联合国教科文组织国际岩溶研究中心, 桂林 541004	geoxie@126.com
梁永平	中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 桂林 541004 联合国教科文组织国际岩溶研究中心, 桂林 541004
李军	中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 桂林 541004 联合国教科文组织国际岩溶研究中心, 桂林 541004 河北建筑工程学院河北省水质工程与水资源综合利用重点实验室, 张家口 075000	lipshydro@163.com
邹胜章	中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 桂林 541004 联合国教科文组织国际岩溶研究中心, 桂林 541004
申豪勇	中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 桂林 541004 联合国教科文组织国际岩溶研究中心, 桂林 541004
赵春红	中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 桂林 541004 联合国教科文组织国际岩溶研究中心, 桂林 541004
王志恒	中国地质科学院岩溶地质研究所, 自然资源部/广西岩溶动力学重点实验室, 桂林 541004 联合国教科文组织国际岩溶研究中心, 桂林 541004

中文摘要 龙子祠泉是临汾市工农业和城市生活的重要水源，随着公众环境健康意识提高，地下水金属元素健康风险研究显得尤为必要.对龙子祠泉域内43个地下水样品中10种金属元素（As、Cd、Hg、Al、Pb、Co、Mn、Fe、Cu和Ni）进行检测和分析，运用多元统计分析方法和健康风险评价模型研究了地下水中10种金属元素分布特征及其暴露的健康风险.结果表明，研究区地下水中金属元素平均浓度由高到低分别为Fe、Al、Mn、Ni、As、Cu、Co、Pb、Hg和Cd，其中Al、Mn、Fe和As超出地下水质量标准（GB/T 14848-2017）Ⅲ类水标准限值.从泉域内不同地下水类型角度看，岩溶泉水水质较好，均达到了生活饮用水的标准；矿坑排水金属超标率（60%）最高，水质最差.多元统计结果表明，Pb、Ni、Co、Cd、Mn和Cu这6种元素主要受到地球化学背景的影响，Al、Fe、Hg和As主要是在山西特有的地质背景下，与人类矿业开采活动密切相关.健康风险评价表明，研究区内不同类型地下水中金属元素通过饮水途径和皮肤入渗途径对成人和儿童暴露的年均总健康风险排序均为：岩溶井>非岩溶泉>非岩溶井>岩溶泉，健康风险主要源于饮用水途径，经皮肤入渗暴露的健康风险不会对人体造成明显危害.泉域地下水中As是引起最大健康风险的金属元素，在水资源利用时应该给予重点管控，尤其在儿童饮水方面. 英文摘要 Longzici Spring is an important water source for industry, agriculture, and urban life in Linfen City. With the improvements in public environmental health awareness, it is particularly necessary to study the health risk of posed by metal elements in groundwater. In this study, 43 groundwater samples from Longzici Spring area were analyzed for ten metal elements (As, Cd, Hg, Al, Pb, Co, Mn, Fe, Cu, and Ni). The distribution and health risk of these metal elements in the groundwater were studied using multivariate statistical analysis and a health risk assessment model. The results show that metal elements can be ranked, from high to low, by their average concentrations in groundwater in the following order: Fe, Al, Mn, Ni, As, Cu, Co, Pb, Hg, and Cd. The concentration of Al, Mn, Fe, and As exceed the limit for class Ⅲ water, as defined in the quality standard for groundwater (GB/T 14848-2017). Different types of groundwater in the spring area showed different metal contents. The quality of karst spring water was good, reaching the standard for drinking water, while mine drainage water exceeded the standard for drinking water, with the highest metal concentration (60%) and the worst water quality. Multivariate statistical results show that Pb, Ni, Co, Cd, Mn, and Cu concentrations were mainly affected by the geochemical background, while Al, Fe, Hg, and As concentrations were closely related to human mining activities under the unique geological background of Shanxi Province. The health risk assessment showed that the different types of groundwater could be ranked by the annual total health risks, posed by metal elements to adults and children through drinking water and skin infiltration, as follows: karst well > non-karst spring > non-karst well > karst spring. The health risks mainly came from drinking water, while health risks through skin infiltration would not cause obvious harm to the human body. The metal element causing the greatest health risk in spring groundwater was As, which should therefore be controlled in the utilization of water resources, especially in children's drinking water.

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