Page 5 - 《JES》202007

jo urna l o f e nviro n mental scie nces 93 (2020) 1 e12

Available online at www.sciencedirect.com
ScienceDirect

www.elsevier.com/locate/jes

Environmental impact and health risk assessment

of volatile organic compound emissions during

different seasons in Beijing

2
Chuanqi Li 1,2,4 , Qianqian Li 1,4 , Dongge Tong , Qingliang Wang 1,2,4 ,
Mingge Wu 1,4 , Bohua Sun 1,4 , Guijin Su 1,4,* , Li Tan 3,*
1 Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental
Sciences, Chinese Academy of Sciences, Beijing 100085, China
2 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology,
Chengdu 610059, China
3 China National Environmental Monitoring Center (CNEMC), Beijing 100012, China
4
University of Chinese Academy of Sciences, Beijing 100049, China

arti cle i nfo a bstra ct

Article history: Volatile organic compounds (VOCs) are major contributors to air pollution. Based on the
Received 10 July 2019 emission characteristics of 99 VOCs that daily measured at 10 am in winter from 15
Received in revised form December 2015 to 17 January 2016 and in summer from 21 July to 25 August 2016 in Beijing,
6 November 2019 the environmental impact and health risk of VOC were assessed. In the winter polluted
Accepted 7 November 2019 days, the secondary organic aerosol formation potential (SOAP) of VOC (199.70 ± 15.05 mg/
3
Available online 9 December 2019 m ) was significantly higher than that on other days. And aromatics were the primary
contributor (98.03%) to the SOAP during the observation period. Additionally, the result of
Keywords: the ozone formation potential (OFP) showed that ethylene contributed the most to OFP in
Volatile organic compounds (VOCs) winter (26.00% and 27.64% on the normal and polluted days). In summer, however, acet-
Secondary organic aerosol aldehyde was the primary contributor to OFP (22.00% and 21.61% on the normal and
formation potential (SOAP) polluted days). Simultaneously, study showed that hazard ratios and lifetime cancer risk
Ozone formation potential (OFP) values of acrolein, chloroform, benzene, 1,2-dichloroethane, acetaldehyde and 1,3-
Risk assessment butadiene exceeded the thresholds established by USEPA, thereby presenting a health
Potential source contribution risk to the residents. Besides, the ratio of toluene-to-benzene indicated that vehicle ex-
function (PSCF) hausts were the main source of VOC pollution in Beijing. The ratio of m-/p-xylene-to-
ethylbenzene demonstrated that there were more prominent atmospheric photochemical
reactions in summer than that in winter. Finally, according to the potential source
contribution function (PSCF) results, compared with local pollution sources, the spread of
pollution from long-distance VOCs had a greater impact on Beijing.
© 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sci-
ences. Published by Elsevier B.V.

* Corresponding authors.
E-mail addresses: gjsu@rcees.ac.cn (G. Su), tanli@cnemc.cn (L. Tan).
https://doi.org/10.1016/j.jes.2019.11.006
1001-0742/© 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.