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Hydrogeochemical evolution and risk assessment of human health in a riverbank filtration site, northeastern China

机译：中国东北河岸过滤点的水文地球化学演化和人类健康风险评估

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摘要

Intensive agriculture and industrial activities have resulted in contamination in rivers and groundwater quality, which threatens human health. In this study, we used comprehensive physiochemical indicators to assess the quality of groundwater used for drinking and irrigation in addition to the potential risks to local residents in a riverbank filtration site. Human health risks through drinking water intake and dermal contact were also estimated. Moreover, we analyzed the spatial distribution regularities of health risk values in a riverbank filtration site. The assessment results revealed that NH4-N, NO2-N, F-, Mn, and As are main contaminants affecting groundwater quality and that 62% of the total samples is suitable for a variety of purposes. All groundwater in the study area is suitable for irrigation based on the sodium adsorption ratio (SAR), residual sodium carbonate (RSC), Na percentage (%Na), and U.S. Salinity Laboratory (USSL) and Wilcox diagrams. The health risk assessment suggests that residents in the study area are at high health risk, and women and children face higher risk than men in both non-carcinogenic and carcinogenic risks. The spatial distribution regularities of health risk values suggest that the human health risk value of each groundwater sample is different in the study area and has certain regularity. Therefore, effective measurements must be taken to address the groundwater contamination and to reduce the human health risks.
机译：密集的农业和工业活动已导致河流和地下水质量受到污染，威胁到人类健康。在这项研究中，我们使用了综合的理化指标来评估用于饮用水和灌溉的地下水的质量，以及对河岸过滤站点中当地居民的潜在风险。还估计了通过饮水和皮肤接触对人体健康的危害。此外，我们分析了河​​岸过滤站点中健康风险值的空间分布规律。评估结果表明，NH4-N，NO2-N，F-，Mn和As是影响地下水水质的主要污染物，总样品中的62％适用于多种用途。根据钠吸附率（SAR），残留碳酸钠（RSC），钠百分比（％Na）以及美国盐度实验室（USSL）和Wilcox图，研究区域中的所有地下水均适合灌溉。健康风险评估表明，研究区居民的健康风险较高，在非致癌和致癌风险方面，妇女和儿童面临的风险比男性高。健康风险值的空间分布规律表明，每个地下水样品的人类健康风险值在研究区域是不同的，并且具有一定的规律性。因此，必须采取有效措施来解决地下水污染问题并降低人类健康风险。

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