Particulate matter deposited on leaf of five evergreen species in Beijing, China: Source identification and size distribution

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Particulate matter deposited on leaf of five evergreen species in Beijing, China: Source identification and size distribution
	Song, Yingshi; Maher, Barbara A.; Li, Feng; Wang, Xiaoke; Sun, Xiao; Zhang, Hongxing
刊名	ATMOSPHERIC ENVIRONMENT
	2015-03
卷号	105 期号:1 页码:53-60
关键词	Particulate matter Evergreen species Particle number Particle composition Particle mass concentrations
英文摘要	Airborne particulate matter (PM) has become a serious problem, and urban plants can play important roles in reducing PM concentrations in the air. The morphology, size, and elemental composition of PM on tree leaves (five evergreen species) from Beijing, China, were obtained, together with number density of PM size fraction, by using scanning electron microscopy (SEM) and energy dispersive X-rays (EDX). The rinse and weigh method was used to characterize PM in three size categories (0.2-2.5 mu m, 2.5 10 gm, and 10-100 mu m). The results showed that PM up to 2 gm can get into the stomatal cavity, and the most furrowed areas of the leaf surfaces Were sites of maximum PM deposition. The leaf-deposited PM mainly comprised C, O, Si, and Fe. The number of particles per leaf per cm(2) was 1.95 x 10(7), and 96% of the particles were less than 2.5 gm. The mass concentration was 148.44 mu g/cm(2), and PM2.5 comprised only 2.09% by weight while PM larger than 10 mu m comprised 79%. Juniperus formosana was most effective at mitigating airborne PM on the leaf scale. Pinus bun geana accumulated the most PM on the tree scale. The results showed that urban plants can play important roles in mitigating urban airborne PM. (C) 2015 Elsevier Ltd. All rights reserved.
研究领域[WOS]	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000350780000008
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32350]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Song, Yingshi,Maher, Barbara A.,Li, Feng,et al. Particulate matter deposited on leaf of five evergreen species in Beijing, China: Source identification and size distribution[J]. ATMOSPHERIC ENVIRONMENT,2015,105(1):53-60.
APA	Song, Yingshi,Maher, Barbara A.,Li, Feng,Wang, Xiaoke,Sun, Xiao,&Zhang, Hongxing.(2015).Particulate matter deposited on leaf of five evergreen species in Beijing, China: Source identification and size distribution.ATMOSPHERIC ENVIRONMENT,105(1),53-60.
MLA	Song, Yingshi,et al."Particulate matter deposited on leaf of five evergreen species in Beijing, China: Source identification and size distribution".ATMOSPHERIC ENVIRONMENT 105.1(2015):53-60.