School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Ecotoxicol Environ Saf. 2018 Nov 30;164:181-188. doi: 10.1016/j.ecoenv.2018.08.017. Epub 2018 Aug 14.
Information about the concentrations of strontium (Sr(II)) in drinking water in China and the corresponding health risks to Chinese residents is lacking. This study investigated Sr(II) in drinking water through a monthly sampling campaign in twelve locations in Xi'an, Northwest China. A health risk assessment for different age groups and exposure pathways were carried out by Monte Carlo simulation. The results show Sr(II) concentrations of 0.06-1.69 mg/L in all drinking water samples, which exceeded the minimum reporting level (MRL) of 0.3 μg/L. Also, one sample exceeded the health reference level (HRL) of 1500 μg/L. Higher Sr(II) levels were recorded in groundwater supply zones and springs, and more potential changes in Sr(II) occurred in distribution pipes transporting groundwater. The non-carcinogenic risk associated with Sr(II) exposure via drinking water was less than 1, indicating no significant health risk to the residents of Xi'an. As the first attempt to provide information on the health risks of Sr(II) in drinking water in China, findings from this study can be useful for the development of potential strategies for risk control and management.
关于中国饮用水中锶（Sr(II)）浓度和中国居民相应健康风险的信息还很缺乏。本研究通过在中国西北部的西安市的 12 个地点进行每月抽样活动，调查了饮用水中的 Sr(II)。通过蒙特卡罗模拟对不同年龄组和暴露途径进行了健康风险评估。结果表明，所有饮用水样本中的 Sr(II)浓度为 0.06-1.69mg/L，超过了最低报告水平（MRL）0.3μg/L。此外，有一个样本超过了 1500μg/L 的健康参考水平（HRL）。地下水供应区和泉水的 Sr(II)浓度较高，输送地下水的配水管道中 Sr(II)的潜在变化更多。通过饮用水接触 Sr(II)导致的非致癌风险小于 1，表明西安居民没有显著的健康风险。作为首次尝试提供中国饮用水中 Sr(II)健康风险的信息，本研究的结果可为制定潜在的风险控制和管理策略提供有用信息。
