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Geochemical Journal, Vol. 51 (No. 6), pp. 485-494, 2017
doi:10.2343/geochemj.2.0480

Emission inventory and distribution characteristics of atmospheric polycyclic aromatic hydrocarbons in a coking industry city in Northern China

Wei Liu,1,2 Zhonghuan Xia1,2,3,4* and Hao Yang2,3,4

1Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Environment, Nanjing Normal University, Nanjing 210023, China
2Key Laboratory of Virtual Geographic Environment (Nanjing Normal University), Ministry of Education, Nanjing 210023, China
3Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China
4State Key Laboratory Cultivation Base of Geographical Environment Evolution (Jiangsu Province), Nanjing 210023, China

(Received August 25, 2016; Accepted April 5, 2017)

Abstract: The sources of 16 polycyclic aromatic hydrocarbons (PAHs) in Linfen, a coking industry city in Northern China, were studied. The overall emission amount for these 16 PAHs in 2013 in Linfen was 825.12 t, with 149.22 t identified as carcinogenic PAHs. The emission intensity of PAHs in 2013 was about 40.7 kg/km2 in Linfen, which was much higher than the average intensity found in China in 2013. Most of the PAHs were generated from the combustion of domestic, industrial, and coke-production coal, accounting for 78.6% of the total emission amount. Among the emissions of these 16 PAHs, two- and three-ring PAHs made up the majority (68.15%). In the different areas (17 in total) of Linfen, the PAH emissions ranged from 143.35 t in Hongdong County to 2.64 t in Daning County. There was a positive correlation between the rural population and total PAH emissions (R2 = 0.794). The estimated 16 PAH emissions in Linfen from 1995 to 2013 based on historical energy consumption data showed that the amount of PAH emissions has been gradually increasing.
Key words: PAHs, emission inventory, Linfen, source apportionment, uncertainty analysis


*Corresponding author E-mail: zhhxia@njnu.edu.cn


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