研究动态
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富锂矿区地下水污染、水文地球化学和蒙特卡罗模拟健康风险评估。

Appraisal of contamination, hydrogeochemistry, and Monte Carlo simulation of health risks of groundwater in a lithium-rich ore area.

发表日期:2024 Oct 09
作者: Jelena Vesković, Andrijana Miletić, Milica Lučić, Antonije Onjia
来源: ENVIRONMENTAL GEOCHEMISTRY AND HEALTH

摘要:

本研究结合了水文地球化学相、熵权水质指数 (EWQI)、多元统计和人类暴露概率评估,以研究水文地球化学、分析地下水质量并估计富锂矿区(贾达尔河)对人类健康的潜在风险盆地,塞尔维亚)。研究结果将Ca·Mg-HCO3水文地球化学类型确定为地下水的主要类型,其中岩石风化和蒸发控制着主要的离子化学。由于富含锂矿物(碧玉)的风化,地下水中的锂含量非常高,高达567毫克/升,中值为4.3毫克/升。根据EWQI计算,86.4%的样品属于劣质和极劣质饮用水。研究区域的地理空间测绘发现了几个地下水严重污染的热点地区。风险评估结果显示,地下水污染物对居民健康构成显着的非致癌和致癌风险,大部分样本超过危害指数(HI)和增量终生癌症风险(ILCR)的允许限值。摄入暴露途径已被确定为关键的污染物途径。蒙特卡罗风险模拟表明,两个年龄段患癌症的可能性都非常高。敏感性分析强调摄入率和人体体重是对健康风险评估结果变异性影响最大的两个暴露因素。© 2024。作者获得 Springer Nature B.V. 的独家许可。
This study incorporated hydrogeochemical facies, the entropy-weighted water quality index (EWQI), multivariate statistics, and probabilistic human exposure assessment to investigate hydrogeochemistry, analyze groundwater quality, and estimate potential risks to human health in a lithium-rich ore area (Jadar River basin, Serbia). The findings designated the Ca·Mg-HCO3 hydrogeochemical type as the predominant type of groundwater, in which rock weathering and evaporation control the major ion chemistry. Due to the weathering of a lithium-rich mineral (Jadarite), the lithium content in the groundwater was very high, up to 567 mg/L, with a median value of 4.3 mg/L. According to the calculated EWQI, 86.4% of the samples belong to poor and extremely poor quality water for drinking. Geospatial mapping of the studied area uncovered several hotspots of severely contaminated groundwater. The risk assessment results show that groundwater contaminants pose significant non-carcinogenic and carcinogenic human health risks to residents, with most samples exceeding the allowable limits for the hazard index (HI) and the incremental lifetime cancer risk (ILCR). The ingestion exposure pathway has been identified as a critical contaminant route. Monte Carlo risk simulation made apparent that the likelihood of developing cancerous diseases is very high for both age groups. Sensitivity analysis highlighted ingestion rate and human body weight as the two most influential exposure factors on the variability of health risk assessment outcomes.© 2024. The Author(s), under exclusive licence to Springer Nature B.V.