Groundwater quality assessment and health risks from nitrate contamination in the Heilongdong Spring Basin, a typical headwater basin of the North China Plain
Groundwater quality assessment and health risks from nitrate contamination in the Heilongdong Spring Basin, a typical headwater basin of the North China Plain
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华北平原典型水源地黑龙东泉盆地地下水质量评价及硝酸盐污染健康风险
DOI：
10.1007/s11356-021-17065-6
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发表时间：
2021-10-20
影响因子：
5.8
通讯作者：
Wang, Shou
中科院分区：
文献类型：
--
作者：
Liu, Fei;Zhen, Pinna;Wang, Shou
地下水水质评价对全球地下水资源的可持续利用具有重要意义。研究了华北平原典型源区黑龙东泉流域不同年龄段地下水水质现状及硝酸盐污染的健康风险。在2017年12月和2018年8月的两次实地调查中，共采集了39份地下水样本，并测量了主要离子。结果表明，除少数例外，大部分地下水化学参数均低于世界卫生组织标准。在超过一半的水样中，人为来源和含水层非均质性是硝酸盐污染的共同原因。饮用方面，地下水补给和排放主要集中的西部和东南部地区地下水水质为优或良。但研究区中部和北部水质较差，可能与过渡带水流缓慢或停滞有关。此外，用这种地下水灌溉的农田不会受到钠或镁的危害，但会受到潜在的盐度危害。研究区不同年龄组的健康风险差异显著，总体顺序为婴儿b>儿童>成年女性>成年男性。研究结果为制定华北平原源区地下水资源可持续开发战略提供了参考依据。
Groundwater quality assessment is crucial to the sustainable utilization of global groundwater resources. This study examined the current groundwater quality circumstance and the associated health risks from nitrate contamination for different age groups in the Heilongdong Spring Basin, a typical headwater basin of the North China Plain. A total of 39 groundwater samples were collected, and major ions were measured during the two field investigations (December 2017, August 2018). Results showed that most of groundwater chemical parameters were below the World Health Organization standards with a few exceptions. Anthropogenic sources and aquifer heterogeneity were jointly responsible for nitrate pollution in more than half of water samples. For drinking purpose, the groundwater was excellent or good in the western and southeastern regions where groundwater recharge and discharge mainly occur. However, the poor water quality samples were observed in the central and northern parts of the study area, which may be attributed to the slow or stagnant flow in the transitional zone. Additionally, the farmland irrigated with such groundwater will not be exposed to sodium or magnesium hazard but will suffer from the potential salinity hazard. The health risk for different age groups in the study area varied significantly, generally in the order of infants > children > adult females > adult males. The findings of this work provide valuable information for decision-makers to formulate sustainable strategies for groundwater resources development in these headwater basins of the North China Plain.