Variation in Road Dust Heavy Metal Concentration, Pollution, and Health Risk with Distance from the Factories in a City-Industry Integration Area, China.
Variation in Road Dust Heavy Metal Concentration, Pollution, and Health Risk with Distance from the Factories in a City-Industry Integration Area, China.
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中国城市产业融合区道路灰尘重金属浓度、污染和健康风险随距工厂距离的变化
DOI：
10.3390/ijerph192114562
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发表时间：
2022-11-06
影响因子：
--
通讯作者：
Shen, Wei
中科院分区：
文献类型：
--
作者：
Chen, Yinan;Hu, Zhiqiang;Bai, He;Shen, Wei
采集郑州经济技术开发区3个典型工厂（F1、F2和F3）道路灰尘样品，研究了道路灰尘中重金属（As、Cd、Cr、Cu、Hg、Ni、Pb和Zn）含量、污染程度和健康风险随距离的变化。结果表明，F1附近的所有元素浓度均高于F2和F3附近。除Co、Mn、Cu外，其他元素含量均不同程度地高于相应的背景值。工厂周围重金属的空间分布符合正态分布。各元素浓度的峰值均出现在距工厂300~400 m处，但Hg的浓度在500 m以上仍持续升高。根据BC计算的F1、F2、F3污染负荷指数值波动曲线均出现“小峰”和“大峰”两个峰值，分别出现在30 m和300 m左右。危害指数和总致癌危险度的峰值均出现在400 m处，曲线均服从正态分布。暴露于F1周围的非致癌和致癌元素的道路灰尘大于F2或F3周围。研究结果可为现代制造业企业粉尘重金属污染的有效防治提供参考。
Road dust samples around three typical factories, F1, F2, and F3, in the National Zhengzhou Economic and Technology Development Zone (ZETZ), China, were collected to study the variation in heavy metal concentration (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn), pollution, and health risk with distance from the factories. The results indicated that the concentrations of all the elements near F1 were higher than near both F2 and F3. Apart from Co, Mn, and Cu in some dust samples, all the element concentrations were higher than the corresponding background values (BCs), to varying degrees. The spatial distributions of the heavy metals surrounding the factories followed the normal distribution. The peak values of element concentrations occurred at 300~400 m away from the factories, except for Hg, which continued increasing more than 500 m away from the factories. The fluctuation curves of the pollution load index value calculated according to the BCs for F1, F2, and F3 all had two peaks, a “small peak” and a “large peak”, appearing at about 30 m and 300 m, respectively. For the hazard index and the total carcinogenic risk, the peak values all appeared at 400 m, with the curves following the normal distribution. Exposure to road dust containing non-carcinogenic and carcinogenic elements around F1 was greater than around F2 or F3. In conclusion, our results provide a reference for pursuing effective prevention of dust heavy metal pollution around modern manufacturing factories.
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