Distribution, source and health risk assessment of polycyclic aromatic hydrocarbons (PAHs) in PM2.5 in Beijing Olympic Park in heating and nonheating seasons.

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Distribution, source and health risk assessment of polycyclic aromatic hydrocarbons (PAHs) in PM_2.5 in Beijing Olympic Park in heating and nonheating seasons.

SONG Guang-wei^1,2, HU Jian^3*, CUI Meng^2,4, LIU Hai-hong^5,6, CHEN Xin⁷, DONG Xin-yuan^2,4, ZHAO Chang-qiu^2,4

(¹Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China; ²University of Chinese Academy of Sciences, Beijing 100049, China; ³Research Center for EcoEnvironmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; ⁴Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China; ⁵Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China; ⁶Urban and Environmental Science College, Tianjin Normal University, Tianjin 300387, China; ⁷Water Environment Monitoring Laboratory of Chinese Environment Monitoring Station, Beijing 100023, China).

Online:2019-11-10 Published:2019-11-10

Abstract

Abstract: We collected 67 particulate matter (PM_2.5) samples in the Beijing Olympic Park from December 2017 to June 2018 to examine the concentration, distribution characteristics and sources of polycyclic aromatic hydrocarbons (PAHs) in PM_2.5, and assess the health risks during the heating season and non-heating season. The PAHs were detected by the GC-MS. The average values of the total concentrations of 16 PAHs associated in PM_2.5 in the heating season and non-heating season were 213.6 and 52.5 ng·m^-3, respectively. The molecular diagnostic ratios and principal component analysis were applied to apportion the sources of PAHs. The results showed that the sources of PAHs were mainly derived from the combustion of petroleum and coal during heating period, and from vehicular emissions during non-heating period. The health risk evaluation of PAHs was conducted by the model of incremental lifetime cancer risk (ILCR). There were potential carcinogenesis risks when exposed to PAHs associated in PM_2.5.

Key words: soil moisture, maize, drip irrigation, photosynthesis, yield.

SONG Guang-wei, HU Jian, CUI Meng, LIU Hai-hong, CHEN Xin, DONG Xin-yuan, ZHAO Chang-qiu. Distribution, source and health risk assessment of polycyclic aromatic hydrocarbons (PAHs) in PM_2.5 in Beijing Olympic Park in heating and nonheating seasons.[J]. cje.

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Distribution, source and health risk assessment of polycyclic aromatic hydrocarbons (PAHs) in PM_2.5 in Beijing Olympic Park in heating and nonheating seasons.

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