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Polycyclic aromatic hydrocarbons in street dust from different functional areas in Chengdu, China: seasonal variation and health risk assessment.

Authors :
Li, Han-Han
Yang, Zhan-Biao
Xu, Xiao-Xun
Zhu, Xue-Mei
Xian, Jun-Ren
Yang, Yuan-Xiang
Cheng, Zhang
Source :
Environmental Geochemistry & Health; Mar2022, Vol. 44 Issue 3, p1161-1173, 13p
Publication Year :
2022

Abstract

This is the first investigation that identified seasonal variation, possible sources and health risk of 16 PAHs in street dust sampled park area (PA), educational area (EA), commercial area (CA), residential area (RA), and traffic area (TA) of Chengdu, one of the new first-tier cities in China. The total PAHs (∑<subscript>16</subscript>PAHs) concentrations of averaging over two seasons varied from 2.15 to 10.6 mg/kg with a median value of 4.61 mg/kg and in winter (5.48 ± 1.52 mg/kg) were significantly higher than that in summer (4.04 ± 0.91 mg/kg). The highest ∑16PAHs concentration was found in TA (median 6.74 mg/kg). Statistical analysis results indicated that mixture sources of petroleum combustion and combustion of biomass and coal seem to be the primary source of the PAHs in street dust. Carcinogenic risk by incremental lifetime cancer risk (ILCR) model for PAHs in street dust indicates an acceptable potential cancer risk for residents. The same sequences of cancer risk to be observed for both children and adults among different functional areas: TA > CA > EA > RA > PA. The results provided advice for habitants in Chengdu to encourage outdoor activities in parks and residential areas and minimize traffic areas and commercial areas. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02694042
Volume :
44
Issue :
3
Database :
Complementary Index
Journal :
Environmental Geochemistry & Health
Publication Type :
Academic Journal
Accession number :
155379427
Full Text :
https://doi.org/10.1007/s10653-021-01017-7