Pollution characteristics and human health risks of potentially (eco) toxic elements (PTEs) in road dust from metropolitan area of Hefei, China
Pollution characteristics and human health risks of potentially (eco) toxic elements (PTEs) in road dust from metropolitan area of Hefei, China
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DOI：
10.1016/j.chemosphere.2017.04.061
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发表时间：
2017-08-01
期刊：
影响因子：
8.8
通讯作者：
Fu, Biao
中科院分区：
文献类型：
--
作者：
Ali, Muhammad Ubaid;Liu, Guijian;Fu, Biao
采用美国环境保护署（USEPA）提出的基于阵列的风险评估模型，研究合肥市道路扬尘污染特征及其潜在毒性元素（PTE）对人体的健康风险。采用地积累指数（I-geo）描述城市、城郊和工业区道路扬尘的污染特征。结果表明，工业路边灰尘的污染与铁，镍，铜，钛，V，铅，钡，锑，铬，锡，铅，砷和镓显示I-geo值（log（2）（x））之间的I-geo类3至4。另一方面，城市路边灰尘污染与铜，锌，锑和镓之间的Ivo类2至3和As和Pb之间的I-地质类4至5。此外，健康风险评估显示，在所有地点，包括城市、城郊和工业区，非癌症健康危害微不足道。所有接触途径（摄入、吸入和皮肤接触）的危害商数（HQ）和危害指数（HI）值为：
This study aims to investigate the pollution characteristics of road dust and their associated health risks of potentially toxic elements (PTEs) to humans using array-based risk assessment models described by United States Environmental Protection Agency (USEPA) in a metropolitan area of Hefei, China. Geoaccumulation index (I-geo) was used to describe pollution characteristics of roadside dust in urban, periurban and industrial areas. Results indicate that industrial roadside dust was contaminated with Fe, Ni, Cu, Ti, V, Pb, Ba, Sb, Cr, Sn, Pb, As and Ga showing I-geo value (log(2) (x)) between I-geo class 3 to 4. In other hand, urban roadside dust contamination with Cu, Zn, Sb and Ga ranged between Ivo classes 2 to 3 and with As and Pb ranged between I-geo classes 4 to 5. Furthermore, health risk assessment revealed negligible non-cancerous health hazard in all sites including urban, periurban and industrial areas. The hazard quotient (HQ) and hazard Index (HI) values for all exposure routes (ingestion, inhalation, and dermal contact) were