RCEES OpenIR  > 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
2015-03
Source PublicationATMOSPHERIC ENVIRONMENT
Volume105Issue:1Pages:53-60
AbstractAirborne 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.
Department城市与区域生态国家重点实验室
KeywordParticulate Matter Evergreen Species Particle Number Particle Composition Particle Mass Concentrations
WOS Research AreaEnvironmental Sciences ; Meteorology & Atmospheric Sciences
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Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/32350
Collection城市与区域生态国家重点实验室
Recommended Citation
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.
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