Polycyclic aromatic hydrocarbons about the atmosphere in scrap vehicle dismantling base
RAN Xue-ling1, LI Lin2, QIN Yu-fei3,4, LIANG Yun-yan3, XIE Hai-hua3, HE Zi-zhen1, WANG Jian-bo1, LU Yan1, ZHAN Lu4, XU Zhen-ming4
1. College of Environment and Resources, Southwest University of Science and Technology, Mianyang 621000, China; 2. Liaoning Ziyu Environmental Engineering Co., LTD., Yingkou 115000, China; 3. Jiangxi Green Recycling Co, Ltd, Yichun 331100, China; 4. School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 201100, China
Abstract：On the basis of the data analyzed from the samples collected in the study, the concentration distribution characteristics and component characteristics of PAHs in each region of the scrap vehicle dismantling base were analyzed. The main sources of the pollutants in the scrap vehicle dismantling base were investigated using positive definite factor matrix model (PMF). The BaP toxic equivalent method (BaPeq), incremental lifetime carcinogenic risk (ILCR) model and comprehensive scoring method were employed to evaluate the impact of PAHs on human health and to identify priority controlling pollutants of PAHs. The results showed that concentration of PM2.5, PM10, and gas phase was respectively 0.638μg/m3, 0.634μg/m3 and 1.6131μg/m3; illustrating that the concentration of PAHs in gas phase was much higher than that in particulate matter. The order of the concentration of PAHs in both gas phase and particular matter according to ring number was 2~3rings> 4rings> 5~6rings; the main sources of the pollutants were identified as synthetic fiber emission and petroleum volatileization; The carcinogenic risk may exist in the scrap carstorage area, other areas in the factory, mechanical crushing area, car dismantling area, vehicle dismantling area and manual sorting area; The priority controlling pollutants were identified and their controling order shallbe Nap> Chr> Flu> Fla> BaA> BbF> BaP> BkF> IcdP> BghiP.
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