Sources, transformation, and health implications of PAHs and their   nitrated, hydroxylated, and oxygenated derivatives in PM2.5 in Beijing

doi:10.1002/2015JD023628

CORC > 北京大学 > 环境科学与工程学院

	Sources, transformation, and health implications of PAHs and their nitrated, hydroxylated, and oxygenated derivatives in PM2.5 in Beijing
	Lin, Yan ; Ma, Yiqiu ; Qiu, Xinghua ; Li, Ran ; Fang, Yanhua ; Wang, Junxia ; Zhu, Yifang ; Hu, Di
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2015
关键词	fine particulate matter (PM2 5) PAHs and the derivatives source apportionment secondary formation toxicity Beijing POLYCYCLIC AROMATIC-HYDROCARBONS SEASONAL-VARIATION AMBIENT AIR EMISSION INVENTORY CARCINOGENIC RISK ORGANIC-COMPOUNDS BLACK CARBON GREAT-LAKES CHINA URBAN
DOI	10.1002/2015JD023628
英文摘要	Fine particulate matter (PM2.5) is a significant health issue in Chinese megacities. However, little information is available regarding the PM2.5-bound toxic organics, especially their sources, atmospheric transformations, and health implications. In this study, we assessed the levels of polycyclic aromatic hydrocarbons (PAHs) and their nitrated, hydroxylated, and oxygenated derivatives (i.e., NPAHs, OHPAHs, and OPAHs, respectively) in PM2.5 collected in Beijing over a 1year period. The median concentration of 23 PAHs, 15 NPAHs, 16 OHPAHs, and 7 OPAHs in PM2.5 was 53.8, 1.14, 1.40, and 3.62ngm(-3), respectively. Much higher concentrations and mass percentages for all species were observed in the heating season, indicating a higher toxicity of PM2.5 during this period of time. Positive matrix factorization was applied to apportion the sources of PAHs and their derivatives. It was found that traffic emissions in the nonheating season, and coal combustion and biomass burning in the heating season, were the major primary sources of PAHs and their derivatives. Secondary formation, however, contributed significantly to the derivatives of PAHs (especially NPAHs and OPAHs) in the nonheating season, suggesting significant impacts of atmospheric transformation on the toxicity of PM2.5.; National Natural Science Foundation of China [21322705, 41121004, 21477102, 21190051]; Ministry of Science and Technology of China (973 program) [2015CB553401]; Collaborative Innovation Center for Regional Environmental Quality; Chinese Scholarship Council; SCI(E); ARTICLE; xhqiu@pku.edu.cn; dihu@hkbu.edu.hk; 14; 7219-7228; 120
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418086]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Lin, Yan,Ma, Yiqiu,Qiu, Xinghua,et al. Sources, transformation, and health implications of PAHs and their nitrated, hydroxylated, and oxygenated derivatives in PM2.5 in Beijing[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2015.
APA	Lin, Yan.,Ma, Yiqiu.,Qiu, Xinghua.,Li, Ran.,Fang, Yanhua.,...&Hu, Di.(2015).Sources, transformation, and health implications of PAHs and their nitrated, hydroxylated, and oxygenated derivatives in PM2.5 in Beijing.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES.
MLA	Lin, Yan,et al."Sources, transformation, and health implications of PAHs and their nitrated, hydroxylated, and oxygenated derivatives in PM2.5 in Beijing".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2015).