Diurnal variation of nitrated polycyclic aromatic hydrocarbons in PM10 at a roadside site in Xiamen, China

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	Diurnal variation of nitrated polycyclic aromatic hydrocarbons in PM10 at a roadside site in Xiamen, China
	Wu, Shuiping ; Yang, Bingyu ; Wang, Xinhong ; Hong, Huasheng ; Yuan, Chungshin ; Hong HS(洪华生)
刊名	http://dx.doi.org/10.1016/S1001-0742(11)61018-8
	2012
关键词	DIRECT-ACTING MUTAGENICITY AIRBORNE PARTICULATE MATTER RADICAL-INITIATED REACTIONS ION CHEMICAL-IONIZATION GAS-PHASE REACTIONS AMBIENT AIR NITRO-PAH PHOTOCHEMICAL ORIGIN DIESEL EXHAUST MEXICO-CITY
英文摘要	National Natural Science Foundation of China [40971257, 41171365]; Environmental Nonprofit Research and Special Project of China [201009004]; Program for Changjiang Scholars and Innovative Research Team in University [IRT0941]; Intensive daytime and nighttime sampling was carried out from 23 Oct to 31 Dec 2008 to investigate the occurrence of nitrated polycyclic aromatic hydrocarbons (NPAHs) in PM10 at a roadside site in Xiamen, China. At the same time, six PM10 samples were collected from a nearby roadway tunnel for comparison. Six NPAHs, namely 9-nitroanthracene, 2- and 3-nitrofluoranthene, 1-nitropyrene, 7-nitrobenz[a]anthracene, and 6-nitrobenzo[a]pyrene, were identified and quantified using GC/MS in negative ion chemical ionization mode. The average total concentration of six NPAHs (Sigma NPAHs) in the cold season (26 Nov-31 Dec) was 2.3 (daytime) and 9.9 (nighttime) times higher than those in the warm season. Significant statistical difference (p < 0.01, 2-tailed) of Sigma NPAHs between daytime and nighttime was found during both the warm and cold seasons. NPAHs were significantly positively correlated with their parent PAHs and nitrogen dioxide but negatively correlated with ambient temperature. The ratio of 2 + 3-nitrofluoranthene to 1-nitropyrene exhibited a similar diurnal pattern as Sigma NPAHs and was generally greater than 5, indicating the importance of secondary atmospheric formation. The diurnal variations of NPAHs were all influenced by the diurnal variations of PAHs, nitrogen dioxide, sunlight, and temperature. The daily inhalable exposure to the six NPAHs in the tunnel was much higher than the roadside values in the warm season but only slightly higher than those in the cold season.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60405]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Wu, Shuiping,Yang, Bingyu,Wang, Xinhong,et al. Diurnal variation of nitrated polycyclic aromatic hydrocarbons in PM10 at a roadside site in Xiamen, China[J]. http://dx.doi.org/10.1016/S1001-0742(11)61018-8,2012.
APA	Wu, Shuiping,Yang, Bingyu,Wang, Xinhong,Hong, Huasheng,Yuan, Chungshin,&洪华生.(2012).Diurnal variation of nitrated polycyclic aromatic hydrocarbons in PM10 at a roadside site in Xiamen, China.http://dx.doi.org/10.1016/S1001-0742(11)61018-8.
MLA	Wu, Shuiping,et al."Diurnal variation of nitrated polycyclic aromatic hydrocarbons in PM10 at a roadside site in Xiamen, China".http://dx.doi.org/10.1016/S1001-0742(11)61018-8 (2012).