Nation wide increase of polycyclic aromatic hydrocarbons in ultrafine particles  during winter over China

doi:10.5194/acp-2020-576

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-576
	Nation wide increase of polycyclic aromatic hydrocarbons in ultrafine particles during winter over China
	Qingqing Yu, Xiang Ding, Quanfu He, Weiqiang Yang, Ming Zhu, Sheng Li, Runqi Zhang, Ruqin Shen, Yanli Zhang, Xinhui Bi, Yuesi Wang, Ping’an Peng, and Xinming Wang
	2020-06-22
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	Polycyclic aromatic hydrocarbons (PAHs) are toxic compounds in the atmosphere and have adverse effects on public health, especially through the inhalation of particulate matter (PM). At present, there are limited understandings in size distribution of particulate-bound PAHs and its health risk on a continental scale. In this study, we carried out a one-year PM campaign and simultaneously measured size-segregated PAHs at 12 sites across six regions of China. The annual averages of total 24 PAHs (∑₂₄PAHs) and benzo[a]pyrene (BaP) carcinogenic equivalent concentration (BaPeq) ranged from 7.56 to 205 ng m⁻³ with a mean of 53.5 ng m⁻³ and 0.21 to 22.2 ng m⁻³ with a mean of 5.02 ng m⁻³, respectively. At all the sites, ∑₂₄PAHs and BaPeq were dominated in the ultrafine particles with aerodynamic diameter <1.1 μm, followed by those in the size ranges of 1.1–3.3 µm and >3.3 µm. Compared with the southern China, the northern China witnessed much higher ∑₂₄PAHs (87.36 ng m⁻³ vs. 17.56 ng m⁻³), BaPeq (8.48 ng m⁻³ vs. 1.34 ng m⁻³) and PAHs inhalation cancer risk (7.4 × 10⁻⁴ vs. 1.2 × 10⁻⁴). Nationwide increases in both PAH levels and inhalation cancer risk occurred in winter. The unfavorable meteorological conditions and enhanced emissions of coal combustion and biomass burning together led to severe PAHs pollution and high cancer risk in the atmosphere of the northern China, especially during winter. Our results suggested that the reduction of coal and biofuel consumption in the residential sector could be crucial and effective to lower PAH concentrations and its inhalation cancer risk in China.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/278125
专题	地球科学
推荐引用方式 GB/T 7714	Qingqing Yu, Xiang Ding, Quanfu He, Weiqiang Yang, Ming Zhu, Sheng Li, Runqi Zhang, Ruqin Shen, Yanli Zhang, Xinhui Bi, Yuesi Wang, Ping’an Peng, and Xinming Wang. Nation wide increase of polycyclic aromatic hydrocarbons in ultrafine particles during winter over China[J]. Atmospheric Chemistry and Physics,2020.
APA	Qingqing Yu, Xiang Ding, Quanfu He, Weiqiang Yang, Ming Zhu, Sheng Li, Runqi Zhang, Ruqin Shen, Yanli Zhang, Xinhui Bi, Yuesi Wang, Ping’an Peng, and Xinming Wang.(2020).Nation wide increase of polycyclic aromatic hydrocarbons in ultrafine particles during winter over China.Atmospheric Chemistry and Physics.
MLA	Qingqing Yu, Xiang Ding, Quanfu He, Weiqiang Yang, Ming Zhu, Sheng Li, Runqi Zhang, Ruqin Shen, Yanli Zhang, Xinhui Bi, Yuesi Wang, Ping’an Peng, and Xinming Wang."Nation wide increase of polycyclic aromatic hydrocarbons in ultrafine particles during winter over China".Atmospheric Chemistry and Physics (2020).