IPICyT, Instituto Potosino de Investigacion Cientifica y Tecnologica, Division de Geociencias Aplicadas, Camino a la Presa San Jose No. 2055, Col. Lomas 4a Sec., San Luis Potosi 78216, SLP, Mexico.
Departamento de Geología, Universidad de Sonora, Rosales y Encinas s/n, Col. Centro, Hermosillo 83000, Sonora, Mexico.
Int J Environ Res Public Health. 2018 May 24;15(6):1060. doi: 10.3390/ijerph15061060.
The aim of this research was to estimate the risk of human exposure to arsenic due to sporting activities in a private soccer club in Mexico, where arsenic-contaminated water was regularly used for irrigation. For this purpose, the total concentration in the topsoil was considered for risk assessment. This was accomplished through three main objectives: (1) measuring arsenic concentrations in irrigation water and irrigated soils, (2) determining arsenic spatial distribution in shallow soils with Geographical Information Systems (GIS) using geostatistical analysis, and (3) collecting field and survey data to develop a risk assessment calculation for soccer activities in the soccer club. The results showed that the average arsenic concentrations in shallow soils (138.1 mg/kg) were 6.2 times higher than the Mexican threshold for domestic soils (22 mg/kg). Furthermore, dermal contact between exposed users and contaminated soils accounted for a maximum carcinogenic risk value of 1.8 × 10, which is one order of magnitude higher than the recommended risk value, while arsenic concentrations in the irrigation water were higher (6 mg/L) than the WHO’s permissible threshold in drinking water, explaining the contamination of soils after irrigation. To the best of our knowledge, this is the first risk study regarding dermal contact with arsenic following regular grass irrigation with contaminated water in soccer pitches.
本研究旨在评估墨西哥一家私人足球俱乐部因运动活动而接触砷的风险，该俱乐部经常使用受砷污染的水进行灌溉。为此，考虑了表土中的总浓度进行风险评估。这通过三个主要目标来实现：(1)测量灌溉水和灌溉土壤中的砷浓度，(2)使用地理信息系统 (GIS) 通过地质统计学分析确定浅层土壤中的砷空间分布，以及 (3)收集现场和调查数据，为足球俱乐部的足球活动开发风险评估计算。结果表明，浅层土壤中的平均砷浓度（138.1 毫克/千克）比墨西哥国内土壤的阈值（22 毫克/千克）高 6.2 倍。此外，暴露用户与受污染土壤的皮肤接触导致最大致癌风险值为 1.8 × 10，这比推荐的风险值高一个数量级，而灌溉水中的砷浓度（6 毫克/升）高于世界卫生组织规定的饮用水可接受阈值，这解释了灌溉后土壤的污染。据我们所知，这是首次针对足球场定期用受污染的水灌溉草地后皮肤接触砷进行的风险研究。
