研究报告
马常莲,周金龙,曾妍妍,白凡,闫志雲.新疆若羌县绿洲带地下水重金属来源解析及健康风险评价[J].环境科学学报,2023,43(2):266-277
新疆若羌县绿洲带地下水重金属来源解析及健康风险评价
- Source analysis and health risk assessment of heavy metals in groundwater in the Oasis Belt of Ruoqiang County， Xinjiang
- 基金项目：国家自然科学基金项目（No.42067035）；新疆水利工程安全与水灾害防治重点实验室2022研究项目（No.ZDSYS-YJS-2022-06）
- 作者
- 单位
- 马常莲
- 新疆农业大学水利与土木工程学院，乌鲁木齐 830052;新疆水利工程安全与水灾害防治重点实验室，乌鲁木齐 830052;新疆水文水资源工程技术研究中心，乌鲁木齐 830052
- 周金龙
- 新疆农业大学水利与土木工程学院，乌鲁木齐 830052;新疆水利工程安全与水灾害防治重点实验室，乌鲁木齐 830052;新疆水文水资源工程技术研究中心，乌鲁木齐 830052
- 曾妍妍
- 新疆农业大学水利与土木工程学院，乌鲁木齐 830052;新疆水利工程安全与水灾害防治重点实验室，乌鲁木齐 830052;新疆水文水资源工程技术研究中心，乌鲁木齐 830052
- 白凡
- 新疆农业大学水利与土木工程学院，乌鲁木齐 830052;新疆水利工程安全与水灾害防治重点实验室，乌鲁木齐 830052;新疆水文水资源工程技术研究中心，乌鲁木齐 830052
- 闫志雲
- 新疆农业大学水利与土木工程学院，乌鲁木齐 830052;新疆水利工程安全与水灾害防治重点实验室，乌鲁木齐 830052;新疆水文水资源工程技术研究中心，乌鲁木齐 830052
- 摘要：为了解新疆若羌县地下水中重金属元素的污染程度及其来源并评价其对人类健康的危害.对采集的51组地下水样品中7种金属元素（As、Cd、Mn、Cu、Fe、Ni、和Pb）进行分析，运用多元统计分析和综合污染评价法了解7种元素的分布状况和污染特征，结合PMF源解析模型和健康风险评价模型分别揭示了若羌县地下水中金属元素的来源和健康风险.结果表明：①研究区地下水金属元素平均含量排序为：Fe＞Ni＞Mn＞Cd＞Cu＞As＞Pb，地下水中除Cu外，其他元素含量均值均高于地下水质量标准（GB/T 14848-2017）Ⅲ类水标准限值.②研究区地下水受到As、Cd、Mn、Fe和Ni的不同程度污染，其中Mn和Fe污染较为严重，呈面状分布，无Cu、Pb污染.③PMF源解析结果表明，As污染来源于矿物溶解；Cd和Ni污染受地质环境和农业活动的双重影响；Fe、Mn污染主要受自然因素影响；Pb、Cu主要来源为交通活动.④健康风险评价结果表明，饮用途径暴露的健康风险高于皮肤入渗途径且成人的健康风险高于儿童.非致癌健康风险（HI）主要由As、Cd和Ni经饮用途径引起.由As和Cd引起的致癌风险值（ILCR）在两种人群、两种途径下均高于最大可接受风险水平（1.0×10-4）.相关部门应重视研究区地下水污染问题，严格控制污染来源，重点关注饮用地下水中As、Cd、Ni的管控，以期降低健康风险.
- Abstract：To explore the pollution and sources of heavy metals in groundwater and evaluate the harm to human health in Ruoqiang County of Xinjiang， seven heavy metals （As， Cd， Mn， Cu， Fe， Ni and Pb） in 51 groundwater sampling points were analyzed. The distribution and pollution characteristics of eight heavy metals were analyzed by multivariate statistical analysis and comprehensive pollution assessment method， and the sources and health risks of heavy metals in groundwater were revealed by the combination of PMF model and health risk assessment model. The results showed that： ① The average contents of groundwater heavy metals showed a descending order of Fe， Ni， Mn， Cd， Cu， As and Pb； the average contents of groundwater heavy metals were higher than the class III “groundwater quality standard （GB/T 14848-2017）” （except for Cu）. ② The groundwater in the study area was polluted by As， Cd， Mn， Fe and Ni to different degrees but was not polluted by Cu and Pb， among which Mn and Fe were more seriously polluted and distributed in a planar shape， without Cu and Pb pollution. The groundwater was polluted by As， Cd， Mn， Fe and Ni in different degrees， among which Mn and Fe were more seriously polluted and distributed in a plane shape. ③PMF source analysis results showed that As pollution originated from mineral dissolution； Cd and Ni pollution were influenced by both geological environment and agricultural activities； Fe and Mn pollution were mainly influenced by natural factors； Pb and Cu pollution were mainly sourced from traffic activities. ④ Health risk assessment showed that the health risk of drinking was higher than that of skin infiltration， and the health risk of adults was higher than that of children. Non-carcinogenic health risk （HI） was mainly caused by As， Cd and Ni through drinking. The carcinogenic risk value （ILCR） of both adults and children exposed to As and Cd through drinking and skin infiltration were higher than the maximum acceptable risk level （1.0×10-4）. Relevant administrations should pay attention to groundwater pollution， strictly control pollution sources， and focused on the control of As， Cd， Ni in groundwater for drinking to reduce health risks.
摘要点击次数： 142 全文下载次数： 332
