| 巴伊盆地平原区地下水氟的分布、来源及富集成因 |
| 摘要点击 236 全文点击 21 投稿时间：2024-05-08 修订日期：2024-07-04 |
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| 中文关键词 地下水 氟 分布特征 来源 富集成因 巴伊盆地 |
| 英文关键词 groundwater fluoride distribution characteristics sources enrichment causes Barkol-Yiwu Basin |
| 作者 | 单位 | E-mail | | 张晓瑜 | 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 | 1664589837@qq.com | | 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 | 644257818@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 | | | 孙英 | 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 | |
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| 中文摘要 |
| 巴伊盆地存在高氟（F-）地下水,F-浓度过高会影响当地居民身体健康.以巴伊盆地平原区地下水为研究对象,通过Durov图和描述性统计方法分析了地下水化学特征及F-的空间分布,在基于随机森林的相对重要性排序结果上,进行PMF源解析揭示了F-的来源,并结合地下水环境以及水文地球化学作用确定研究区地下水F-的富集成因.结果表明,研究区地下水以弱碱性淡水为主,高F-地下水化学类型主要为Na型和SO4型；潜水中ρ（F-）的变化范围为0.16~2.54 mg·L-1,超标率为18.8%,承压水中ρ（F-）的变化范围为0.23~1.25 mg·L-1,超标率为37.5%,F-浓度整体表现为潜水大于承压水,高F-地下水分布在巴里坤湖东北部山前地带、奎苏镇、三塘湖镇西部、大红柳峡乡、下涝坝乡以及伊吾县下马崖乡处；地下水化学组分受溶滤-蒸发浓缩、地质环境和人类活动因子的影响,贡献率分别为39.1%、31.6%和29.3%.地下水F-富集的成因主要有溶滤-蒸发浓缩作用、矿物的溶解作用和正向阳离子交换作用.研究结果对制定区域水资源保护管理措施以及防病改水具有重要意义. |
| 英文摘要 |
| High fluoride （F-） groundwater has been found in Barkol-Yiwu Basin, and a high F- concentration will affect the health of local residents. Taking the groundwater in the plain area of Barkol-Yiwu Basin as the research object, the chemical characteristics of groundwater and the spatial distribution of F- were analyzed using a Durov diagram and descriptive statistics method. Based on the relative importance ranking results of random forest, PMF source analysis revealed the source of F- and combined it with the groundwater environment and hydrogeochemical effects to determine the enrichment causes of groundwater F-. The results showed that the groundwater was mainly weakly alkaline fresh water, and the chemical types of high F- groundwater were mainly Na type and SO4 type. The variation range of F- concentration in phreatic water was 0.16-2.54 mg·L-1, with the excess rate of 18.8%, and the variation range of F- concentration in confined groundwater was 0.23-1.25 mg·L-1, with the excess rate of 37.5%. The overall F- concentration in phreatic water was greater than that in confined groundwater. The high F- groundwater was distributed in the northeast piedmont area of Barkol Lake, Kuisu Town, the western part of Santanghu Town, Dahongliuxia Township, Xialaoba Township, and Xiamaya Township of Yiwu County. The chemical composition of groundwater was affected by leaching-evaporation concentration, geological environment, and human activities, which contributed 39.1%, 31.6%, and 29.3%, respectively. The causes of F- enrichment in groundwater mainly included leaching-evaporation concentration, mineral dissolution, and positive cation exchange. The results were important for formulating regional groundwater resources protection and management measures and improving groundwater quality in Barkol-Yiwu Basin. |
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