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首页> 外文期刊>Environmental Geochemistry and Health >Fluoride and nitrate in groundwater of rural habitations of semiarid region of northern Rajas than, India: a hydrogeochemical, multivariate statistical, and human health risk assessment perspective
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Fluoride and nitrate in groundwater of rural habitations of semiarid region of northern Rajas than, India: a hydrogeochemical, multivariate statistical, and human health risk assessment perspective

机译：Rajas半干旱地区农村居所地下水的氟化物和硝酸盐比印度：水文化学，多元统计和人体健康风险评估视角

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摘要

In arid and semiarid regions, groundwater is required for the drinking, agriculture, and industrial activities due to scarcity of surface water. Groundwater contaminated with high concentrations of fluoride and nitrate can severely affect human health in these regions. Twenty-eight groundwater samples from rural habitations of Jhunjhunu district, Rajasthan, India, were collected in March 2018 and subjected to analysis for water quality parameters. Fluoride and nitrate concentrations in groundwater varied from 0 to 5.74 mg/L and 10.22-519.64 mg/L, respectively. Nitrate content of about 86% samples and fluoride content of about 54% exceeded the permissible limit of Bureau of Indian Standards (IS:10,500) as well as World Health Organization standards. All groundwater samples belonged to poor to unfit drinking water quality index. Principle component analysis elucidates the anthropogenic contribution to high nitrate concentrations observed in this area. Noncarcinogenic human health risk evaluated from high nitrate and fluoride in drinking water for children, men, and women points to the fact that noncarcinogenic risk is exceeding the allowable limit to human health. The predominating hydrochemical facies in the area is Na+-HCO3--Cl- followed by Na+-Mg2+-HCO3--Cl-. The Gibbs plot and bivariate ionic cross-plots suggest the noncarbonate weathering (rock dominance), evaporation dominance, and ion exchange process to be the predominating geochemical mechanisms governing the evolution of groundwater hydrogeochemistry. Giggenbach diagram shows the immature character, i.e., incomplete equilibration of the groundwater.
机译：在干旱和半干旱地区，由于地表水的稀缺，饮酒，农业和工业活动需要地下水。含有高浓度氟化物和硝酸盐的地下水可能会严重影响这些地区的人类健康。 2018年3月收集了来自印度拉贾斯坦邦的jhunjhunu区农村居住的二十八个地下水样本，并进行了水质参数分析。地下水中的氟化物和硝酸盐浓度分别不同于0至5.74mg / L和10.22-519.64 mg / L。硝酸盐含量约为86％样品和氟化物含量约为54％，超过印度标准局（是：10,500）以及世界卫生组织标准的允许极限。所有地下水样本都属于穷人，不适合饮用水质量指数。原理成分分析阐明了在该区域观察到的高硝酸盐浓度的人为贡献。非含硝酸盐和氟化物中儿童，男性和女性的饮用水中评估的抗癌性人体健康风险指出了令人非变性风险超过人类健康的允许限额的事实。该地区的占优势水化学相是Na + -HCO3 - 接下来是Na + -Mg2 + -HCO3 - Cl-。吉布斯图和二抗体离子交叉图建议了瓦斯巴酸盐风化（岩石优势），蒸发优势和离子交换过程，是治疗地下水水力源的演变的主要机理。 GIGGENBACH图显示了地下水的不成熟特征，即不完全平衡。

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