当前位置: X-MOL 学术J. Environ. Health Sci. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Human health risk estimation and predictive modeling of halogenated disinfection by- products (chloroform) in swimming pool waters: a case study of Dhanbad, Jharkhand, India
Journal of Environmental Health Science and Engineering ( IF 3.0 ) Pub Date : 2020-10-27 , DOI: 10.1007/s40201-020-00578-6
Puja Anchal 1 , Minashree Kumari 1 , Sunil Kumar Gupta 1
Affiliation  

Disinfection is an important process to make the water free from harmful pathogenic substances, but sometimes it results in the formation of harmful by-products. Development of predictive models is required to define the concentration of THMs in pool water. Majority of studies reported inhalation to be the most significant THMs exposure route which is more likely to be dependent upon the concentration of THMs in pool water and in air. THMs concentration in the analyzed pool water samples and in air was found to be 197.18 ± 16.31 μg L−1 and 0.033 μg m3–1, respectively. Statistical parameters such as high correlation coefficients, high R2 values, low standard error, and low mean square error of prediction indicated the validity of MLR based linear model over non-linear model. Therefore, linear model can be most suitably used to pre-assess and predict the THMs levels in swimming pool water. Risk estimation studies was conducted by using the united states environmental protection agency (USEPA) Swimmer Exposure Assessment Model (SWIMODEL). The lifetime time cancer risk values related to chloroform exceeded 10−6 for both the sub-population. Inhalation exposure leads to maximum risk and contributed up to 99% to total cancer risk. Risk due to other exposure pathways like accidental ingestion and skin contact was found to be negligible and insignificant. Monte Carlo simulation results revealed that the simulated THMs risk values for the studied exposure pathways lies within ±3.1% of the average risk values obtained using SWIMODEL. Hence, the risk estimates obtained using SWIMODEL seemed to be appropriate in determining the potential risk exposure of THMs on human health. Variation in input parameters like body weight (BW) and skin surface area (SA) leads to difference in risk estimates for the studied population. Non cancer risk was found to be insignificant as represented by low hazard quotient (HQ < 1) values. Through monitoring and regulations on control of THMs in swimming pool water is required to minimize the risk associated.



中文翻译:


游泳池水中卤化消毒副产物(氯仿)的人类健康风险评估和预测模型:印度贾坎德邦丹巴德的案例研究



消毒是使水不含有害致病物质的重要过程,但有时会导致有害副产品的形成。需要开发预测模型来定义泳池水中 THM 的浓度。大多数研究报告称,吸入是最重要的 THM 暴露途径,这更可能取决于泳池水和空气中 THM 的浓度。分析的池水样品和空气中的THMs浓度分别为197.18±16.31μgL −10.033μgm3–1 。诸如高相关系数、高R 2值、低标准误差和低预测均方误差等统计参数表明基于MLR的线性模型相对于非线性模型的有效性。因此,线性模型最适合用于预评估和预测游泳池水中的THMs水平。使用美国环境保护署 (USEPA) 游泳者暴露评估模型 (SWIMODEL) 进行风险评估研究。对于这两个亚群,与氯仿相关的终生癌症风险值都超过了 10 -6 。吸入暴露会导致最大风险,占总癌症风险的 99%。研究发现,意外摄入和皮肤接触等其他暴露途径造成的风险可以忽略不计且微不足道。蒙特卡罗模拟结果表明,所研究暴露途径的模拟 THM 风险值在使用 SWIMODEL 获得的平均风险值的 ±3.1% 范围内。因此,使用 SWIMODEL 获得的风险估计似乎适合确定 THM 对人类健康的潜在风险暴露。 体重 (BW) 和皮肤表面积 (SA) 等输入参数的变化会导致研究人群的风险估计存在差异。发现非癌症风险微不足道,如低风险商 (HQ < 1) 值所示。需要通过监测和监管游泳池水中的 THM 来控制,以尽量减少相关风险。

更新日期:2020-10-30
down
wechat
bug