[Distribution Characteristics and Genetic Analysis of Fluorine in Groundwater in Middle Reaches of Heihe River].

Q2 Environmental Science
Xiao-Yan Wang, Meng-Nan Zhang, De-Chao Yin, Tao Ma, Shuang-Bao Han, Xi Wu, Wen-Xiang Wang, Yong-Hui An
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引用次数: 0

Abstract

Excess fluoride (F-) in groundwater can be harmful to the health of local residents who depend on it. To study the distribution characteristics and genetic mechanism of high fluoride groundwater in the middle reaches of the main stream of Heihe River, 196 sets of shallow groundwater samples and 9 sets of middle and deep groundwater were collected. Mathematical statistics, Durov diagram, Gibbs diagram, and ion ratio relationship were comprehensively used to explore the distribution characteristics, sources, and influencing factors of fluoride in the groundwater. The results showed that ρ(F-) of shallow groundwater in the study area ranged from n.d to 2.71 mg·L-1, and ρ(F-) in the middle and deep groundwater ranged from n.d to 0.69 mg·L-1. The spatial distribution trend of F- concentration in groundwater was high in the northeast and low in the southwest and the F- concentration decreased with increasing depth. The main chemical type of the regional shallow high fluoride groundwater was SO4·HCO3-Na·Mg, which was mainly distributed in the groundwater discharge area of the piedmont plain of Heli Mountain. Hydrogeological environment and aquifer lithology were the main factors affecting the shallow high fluoride groundwater in the middle reaches of the Heihe River. Fluoride-rich minerals in mountainous areas were the source of F- in groundwater. The alkaline groundwater environment, cation exchange adsorption, and evaporation further promoted the enrichment of F-. This study aims to clarify the source of fluoride in regional groundwater and identify the hydrogeochemical processes and influencing factors of F- enrichment in groundwater, which is essential to ensure the sustainable development of water resources in arid areas.

黑河中游地下水中氟的分布特征及成因分析
地下水中过量的氟化物(F-)可能对依赖它的当地居民的健康有害。为研究黑河干流中游高氟地下水的分布特征及成因机制,采集了196套浅层地下水样本和9套中深地下水样本。综合运用数理统计、Durov图、Gibbs图、离子比关系等方法,探讨地下水中氟化物的分布特征、来源及影响因素。结果表明,研究区浅层地下水的ρ(F-)在n ~ 2.71 mg·L-1之间,中深层地下水的ρ(F-)在n ~ 0.69 mg·L-1之间。地下水中F-浓度的空间分布趋势为东北高、西南低,且随深度增加而降低。区域浅层高氟地下水主要化学类型为SO4·HCO3-Na·Mg,主要分布在鹤里山山前平原地下水排放区。水文地质环境和含水层岩性是影响黑河中游浅层高氟地下水的主要因素。山区富氟化物矿物是地下水含氟的主要来源。碱性地下水环境、阳离子交换吸附和蒸发作用进一步促进了F-的富集。本研究旨在明确区域地下水中氟化物的来源,识别地下水富氟的水文地球化学过程及其影响因素,这对确保干旱区水资源的可持续发展至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
环境科学
环境科学 Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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