Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun, Jilin, China.
Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 4888 Shengbei Street, Changchun City, 130102, Jilin, China.
Environ Geochem Health. 2019 Apr;41(2):729-736. doi: 10.1007/s10653-018-0166-0. Epub 2018 Sep 14.
Stairway dust samples were collected from residential communities in Huludao city to investigate population health risk of arsenic (As) exposure through stairway dust. ArcGIS software was used to analyze As spatial distribution in Huludao city. Hazard index was applied to assess health risk due to exposure to As in stairway dust. The results were that As concentrations ranged from 13.26 to 237.58 mg kg, and the mean value was 59.64 mg kg, which was seven times as high as the background value of Liaoning Province. The pattern of spatial distribution was concentric rings as the center of Huludao zinc plant, with the extension to the northeast and southwest. The average value of I was 2.176, which fell into moderately polluted level. For non-carcinogenic risk, the hazard indexes were less than 1, indicating that there was almost no health risk for residents exposed to stairway dust. But population risk exposure to dust would increase rapidly with exposure time in stairway. The highest contribution to the overall figure of non-carcinogenic risk and carcinogenic risk appeared to be ingestion of substrate particles followed by inhalation pathway and dermal absorption of As in dust samples. And for carcinogenic risk, the risk values were lower than the threshold range of EPA's safe limits (1 × 10 and 1 × 10), suggesting that potential cancer risk of As due to exposure to stairway dust can be acceptable.
对葫芦岛市居民区楼梯灰尘进行采样，以研究通过楼梯灰尘暴露砷（As）对人群健康的影响。采用ArcGIS 软件分析葫芦岛市 As 的空间分布。应用危害指数评估楼梯灰尘中 As 暴露的健康风险。结果表明，As 浓度范围为 13.26-237.58mg/kg，平均值为 59.64mg/kg，是辽宁省背景值的 7 倍。空间分布模式呈葫芦岛锌厂为中心的同心环，向东北和西南延伸。I 的平均值为 2.176，属于中度污染水平。对于非致癌风险，危害指数小于 1，表明居民接触楼梯灰尘几乎没有健康风险。但是，随着暴露时间的增加，人群接触灰尘的非致癌风险暴露会迅速增加。对于非致癌风险和致癌风险，摄入基底颗粒、吸入途径和皮肤吸收是导致灰尘中 As 总非致癌风险和致癌风险的主要因素。对于致癌风险，风险值低于 EPA 安全限值（1×10 和 1×10）的阈值范围，表明接触楼梯灰尘引起的 As 潜在癌症风险是可以接受的。
