| 新疆玛纳斯河流域平原区地下水无机组分分布特征、源解析及健康风险评价 |
| 摘要点击 938 全文点击 156 投稿时间：2024-01-22 修订日期：2024-04-22 |
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| 中文关键词 地下水 无机组分 空间分布 源解析 健康风险评价 玛纳斯河流域平原区 |
| 英文关键词 groundwater inorganic components spatial distribution source analysis health risk assessment plain area of Manas River Basin |
| 作者 | 单位 | E-mail | | 康文辉 | 新疆农业大学水利与土木工程学院, 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
新疆水利工程安全与水灾害防治重点实验室, 乌鲁木齐 830052 | 1754243549@qq.com | | 周殷竹 | 新疆农业大学水利与土木工程学院, 乌鲁木齐 830052
中国地质调查局水文地质环境地质调查中心, 天津 300304 | yinzhu_zhou@qq.com | | 周金龙 | 新疆农业大学水利与土木工程学院, 乌鲁木齐 830052
新疆水文水资源工程技术研究中心, 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 | | | 姜凤 | 新疆农业大学水利与土木工程学院, 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
新疆水利工程安全与水灾害防治重点实验室, 乌鲁木齐 830052 | | | 韩双宝 | 中国地质调查局水文地质环境地质调查中心, 天津 300304 | | | 雷米 | 新疆农业大学水利与土木工程学院, 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
新疆水利工程安全与水灾害防治重点实验室, 乌鲁木齐 830052 | | | 刘金巍 | 中国地质调查局水文地质环境地质调查中心, 天津 300304 | |
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| 中文摘要 |
| 在新疆玛纳斯河流域地下水是日常生活、农业灌溉和工业生产用水的主要来源. 为了探明地下水中无机组分的空间分布、来源及其对人体健康的负面影响,在玛纳斯河流域平原区共采集37组地下水样品,通过GIS克里金插值、PMF来源解析、Pearson相关性分析和健康风险评价模型,分析地下水中无机组分的空间分布、来源和潜在健康风险. 结果表明,区内地下水整体呈弱碱性. TDS和Cl-具有相似的分布特征,在平原区东部浓度较高；SO42-高值区主要分布在玛纳斯县周边以及古尔班通古特沙漠边缘；NO3--N浓度变化受人类活动的影响较大,空间分布不均,高值区主要分布在城市区域；砷（As）、氟（F）和碘（I）是影响地下水质量的重要无机组分,分别有51.35%、 45.95%和51.35%地下水超过《地下水质量标准》Ⅲ类限值,超标区均分布于西岸大渠以北的低平原区,该区域地形坡度和水力坡度较小,含水层颗粒较细,地下水径流强度较弱,利于地下水中As、F和I的富集. 源解析结果表明,地下水不同含水层具有相似的来源或者演化过程. 无机组分的富集主要受控于溶滤-富集作用、地质条件-生活污水-农业灌溉的点源污染、农业活动、生活污水导致的点源污染、碱性还原环境和离子交换作用. 健康风险评价结果表明,玛河流域平原区无潜在非致癌风险. 地下水中的As是威胁人类健康的主要无机物,其对儿童和成人的非致癌风险可以忽略不计,而致癌风险则不可忽略,且儿童对其致癌风险更敏感. 因此,玛河流域饮用水供水安全应更多地关注As暴露的影响,特别是对儿童的影响. |
| 英文摘要 |
| Groundwater is the main source of water for daily life, agricultural irrigation, and industrial production in the Manas River Basin （MRB） in Xinjiang. To explore the spatial distribution and sources of inorganic components in groundwater and their negative effects on human health, 37 groundwater samples were collected in the plain area of MRB. The spatial distribution, sources, and potential health risks of inorganic components in groundwater were analyzed using Kriging interpolation, PMF source analysis, Pearson correlation analysis, and a health risk assessment model. The results showed that all of the groundwater in the area was weakly alkaline. Groundwater TDS and Cl- had similar distribution characteristics, being higher in the eastern part of the plain area. The high SO42- area was mainly distributed in the periphery of Manas County and the edge of the Gurbantonggut desert. The distribution of groundwater NO3--N, which was greatly affected by human activities, showed spatial heterogeneity, and the high-value areas were mainly distributed in urban areas. Arsenic （As）, fluoride （F）, and iodine （I） were important inorganic components affecting groundwater quality, with over-limit rates of 51.35%, 45.95%, and 51.35% according to the Standard for Groundwater Quality （GB/T 14848-2017）. High As, F, and I groundwater was distributed in the low plain area north of the West Bank Canal, which had a small topographic slope, hydraulic gradient, and aquifer particles with weak groundwater runoff intensity and was conducive to the enrichment of groundwater As, F, and I. Source apportionment showed that groundwater in different aquifers had similar sources or evolution processes. The concentration of inorganic components was controlled by leaching concentration, point source pollution under the geological environment-domestic sewage-agricultural irrigation, agricultural activities, point source pollution caused by domestic sewage, an alkaline-reducing environment, and ion exchange. Health risk assessment showed that As in groundwater was the main inorganic component threatening human health. The non-carcinogenic risk for children and adults could be ignored, whereas the carcinogenic risk cannot be ignored, and children were more sensitive to the risk of cancer caused by inorganic substances in the groundwater. Therefore, more attention should be paid to As exposure to drinking water safety, especially for children. |
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