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Parent and alkylated polycyclic aromatic hydrocarbon emissions from coal seam fire at Wuda, Inner Mongolia, China: characteristics, spatial distribution, sources, and health risk assessment by Yahui Qian; Keyue Yuan; Jing Wang; Zhenpeng Xu; Handong Liang; Cai Tie is a Environmental Science article available to read on EtoBox.

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The Wuda coalfield in Inner Mongolia is a vital coal base in China, and it is the hardesthit area for coal fires (spontaneous combustion of coal seams and coal gangue). Using gas chromatography-mass spectrometry, this work tested the concentration and analyzed the characteristics, distribution, sources, and health risks of polycyclic aromatic compounds (PACs) in the surface soil of the Wuda District, including the coal mine, coal fire, agricultural, and background areas. The soil of coal mine and coal fire area were heavily polluted with PACs, with mean concentrations of 9107 and 3163 μg kg −1 , respectively, considerably higher than those in the agricultural (1232 μg kg −1 ) and background areas (710 μg kg −1 ). Alkyl polycyclic aromatic hydrocarbons (APAHs) were the dominant pollutants among these PACs, accounting for 60-81%. Alkyl naphthalenes and alkyl phenanthrenes are the primary pollutants in APAHs, accounting for 80-90% of the total amounts. Additionally, using the positive matrix factorization method, it can be concluded that the primary PAC sources are petrogenic sources, coal and biomass combustion, coal fires, and vehicle emissions. Finally, according to the cancer risk

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Author

Yahui Qian; Keyue Yuan; Jing Wang; Zhenpeng Xu; Handong Liang; Cai Tie

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)