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Modeling exposure risk and prevention of mercury in drinking water for artisanal-small scale gold mining communities
Human and Ecological Risk Assessment ( IF 4.3 ) Pub Date : 2020-12-28 , DOI: 10.1080/10807039.2020.1855576
V. L. Morgan 1 , L. Casso-Hartmann 2 , I. Velez-Torres 2 , D. C. Vanegas 3 , R. Muñoz-Carpena 4 , E. S. McLamore 4 , G. A. Kiker 4
Affiliation  

Abstract

The goal of this study was to evaluate the age-differentiated health risks associated with exposure to mercury in drinking water from artisanal small-scale gold mining (ASGM) sites on nearby communities in Yolombo, Colombia. In 2017, nine samples were collected from a local regulatory agency to report mercury concentrations in locations near mining sites. We performed a risk assessment to find 100% of the water samples collected downstream of mining sites exceed Hazard Quotient (HQ) risk thresholds (set by the US-Environmental Protection Agency and Health Canada). HQ model, coupled with global sensitivity and uncertainty analysis (GSUA), was used to conclude infants as the most vulnerable, with 50% of the population exceeding HQ thresholds. Length of exposure was the most significant input that contributed to risk variance, explaining 30-55% of risk across all age groups. Monte-Carlo filtering was used to identify effective strategies to reduce the number of individuals exceeding allowable HQ thresholds. After Monte-Carlo filtering intervention strategies, all individuals are below HQ thresholds. This work shows the importance of combining risk assessment tools with sensor data to inform the need for filters, stakeholder education, and alternative mining approaches to gain a multi-perspective risk approach. This work provides a valuable risk and decision modeling methodology and baseline information to gain a deeper understanding of the probability of experiencing detrimental health effects from water contamination in ASGM communities.



中文翻译:

手工小规模采金社区饮用水中汞暴露风险建模和预防

摘要

本研究的目的是评估与暴露于哥伦比亚约伦坡附近社区的手工小规模金矿 (ASGM) 地点饮用水中的汞相关的年龄差异健康风险。2017 年,从当地监管机构收集了 9 个样本,以报告采矿场附近地点的汞浓度。我们进行了风险评估,发现在采矿场下游采集的水样 100% 超过了危险商数 (HQ) 风险阈值(由美国环境保护署和加拿大卫生部设定)。HQ 模型与全球敏感性和不确定性分析 (GSUA) 相结合,用于得出婴儿是最脆弱的结论,其中 50% 的人口超过了 HQ 阈值。暴露时长是导致风险差异的最重要的输入,解释了所有年龄组 30-55% 的风险。Monte-Carlo 过滤用于确定有效策略,以减少超出允许的总部阈值的个人数量。在蒙特卡罗过滤干预策略之后,所有个体都低于 HQ 阈值。这项工作显示了将风险评估工具与传感器数据相结合的重要性,以告知过滤器、利益相关者教育和替代挖掘方法的需求,以获得多视角风险方法。这项工作提供了一种有价值的风险和决策建模方法和基线信息,以深入了解 ASGM 社区因水污染而遭受有害健康影响的可能性。Monte-Carlo 过滤用于确定有效策略,以减少超出允许的总部阈值的个人数量。在蒙特卡罗过滤干预策略之后,所有个体都低于 HQ 阈值。这项工作显示了将风险评估工具与传感器数据相结合的重要性,以告知过滤器、利益相关者教育和替代挖掘方法的需求,以获得多视角风险方法。这项工作提供了一种有价值的风险和决策建模方法和基线信息,以深入了解 ASGM 社区因水污染而遭受有害健康影响的可能性。Monte-Carlo 过滤用于确定有效策略,以减少超出允许的总部阈值的个人数量。在蒙特卡罗过滤干预策略之后,所有个体都低于 HQ 阈值。这项工作显示了将风险评估工具与传感器数据相结合的重要性,以告知过滤器、利益相关者教育和替代挖掘方法的需求,以获得多视角风险方法。这项工作提供了一种有价值的风险和决策建模方法和基线信息,以深入了解 ASGM 社区因水污染而遭受有害健康影响的可能性。这项工作显示了将风险评估工具与传感器数据相结合的重要性,以告知过滤器、利益相关者教育和替代挖掘方法的需求,以获得多视角风险方法。这项工作提供了一种有价值的风险和决策建模方法和基线信息,以深入了解 ASGM 社区因水污染而遭受有害健康影响的可能性。这项工作显示了将风险评估工具与传感器数据相结合的重要性,以告知过滤器、利益相关者教育和替代挖掘方法的需求,以获得多视角风险方法。这项工作提供了一种有价值的风险和决策建模方法和基线信息,以更深入地了解 ASGM 社区因水污染而遭受有害健康影响的可能性。

更新日期:2020-12-28
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