Department of Energy and Environmental Sciences, Chaudhary Devi Lal University, Sirsa, Haryana, India.
Department of Biotechnology, Deenbandhu Chhotu Ram University of Science & Technology, Murthal, Sonepat, Haryana, India.
Environ Monit Assess. 2021 Mar 27;193(4):234. doi: 10.1007/s10661-021-08979-2.
The present investigation focused on groundwater hydro-geochemistry of Alsisar block of Jhunjhunu district, India, aims on evaluating the quality of groundwater for drinking and irrigation purposes and assessing the human health risk from ingestion of groundwater. The groundwater of Alsisar block is neutral to alkaline, brackish and very hard in nature. Total dissolved solids, total hardness, Na, Mg, HCO, F and NO in majority of the groundwater samples were exceeding the World Health Organization and Bureau of Indian Standards recommended limits. The drinking water quality index ranged from 111.53 to 492.84. None of the sample belonged to excellent and good categories of drinking water quality. Fluoride varied from 0.018 to 4.176 mg L, and nitrate varied from 0.34 to 520.66 mg L in groundwater. The non-carcinogenic risk assessment for children, men and women owing to ingestion of fluoride and nitrate-enriched groundwater indicates human health risks in the entire study area. Irrigation with groundwater of Alsisar block is liable to cause salinity and magnesium hazard to agricultural crops grown in the area. Source apportionment using principal component analysis suggests the geogenic origin of fluoride and anthropogenic origin of nitrate. Na-Mg-Cl followed by Na-Mg-HCO are the predominant hydrochemical facies in the groundwater of Alsisar block. Silicate rock weathering, ion exchange and evaporation are the predominating processes governing ionic concentrations in the groundwater. Biochemical and molecular tests demonstrated the presence of Brevibacillus borstelensis strain DSM 6347 16s rRNA and Bacillus paramycoides strain MCCC 1A04098 16s rRNA in the groundwater of the area.
本研究聚焦于印度久纳尔区阿尔西萨尔区块的地下水水文学和地球化学，旨在评估地下水的质量，以满足饮用水和灌溉用途，并评估人类因摄入地下水而面临的健康风险。阿尔西萨尔区块的地下水呈中性至碱性、微咸和极硬。大多数地下水样本中的总溶解固体、总硬度、Na、Mg、HCO3、F 和 NO3 均超过世界卫生组织和印度标准局推荐的限值。饮用水质量指数范围为 111.53 至 492.84。没有一个样本属于饮用水质量的优秀和良好类别。氟化物含量在 0.018 至 4.176 mg/L 之间变化，硝酸盐含量在 0.34 至 520.66 mg/L 之间变化。由于摄入富含氟化物和硝酸盐的地下水，对儿童、男性和女性进行的非致癌风险评估表明，整个研究区域都存在人类健康风险。地下水灌溉易导致该地区种植的农业作物遭受盐分和镁的危害。主成分分析的来源分配表明，氟化物具有地球成因起源，硝酸盐具有人为成因起源。Na-Mg-Cl 其次是 Na-Mg-HCO3 是阿尔西萨尔区块地下水的主要水化学相。硅酸盐岩风化、离子交换和蒸发是控制地下水中离子浓度的主要过程。生物化学和分子测试表明，该地区地下水中存在 Brevibacillus borstelensis 菌株 DSM 6347 16s rRNA 和 Bacillus paramycoides 菌株 MCCC 1A04098 16s rRNA。
