| DOI: | 10.1016/j.atmosenv.2015.03.012
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| Scopus记录号: | 2-s2.0-84924403869
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| 论文题名: | Theoretical model for the evaporation loss of PM2.5 during filter sampling |
| 作者: | Liu C; -N; , Lin S; -F; , Tsai C; -J; , Wu Y; -C; , Chen C; -F
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2015
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| 卷: | 109 | | 起始页码: | 79
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| 结束页码: | 86
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| 语种: | 英语
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| 英文关键词: | Evaporation loss
; Filter-based sampler
; PM2.5
; Theory for predicting PM2.5 loss
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| Scopus关键词: | Chlorine compounds
; Temperature
; Absolute difference
; Chemical interactions
; Evaporation loss
; Filter-based
; Increasing temperatures
; Neutral conditions
; Temperature and relative humidity
; Theoretical modeling
; Evaporation
; chloride
; nitrate
; air sampling
; evaporation
; filter
; particulate matter
; pH
; sampler
; theoretical study
; aerosol
; Article
; chemical interaction
; controlled study
; environmental temperature
; evaporation
; gas
; humidity
; particulate matter
; pH
; priority journal
; theoretical model
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| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
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| 英文摘要: | The evaporation losses of PM2.5 particles in eight different size ranges corresponding to the 4th-10th stages and after filter of the MOUDI were calculated theoretically and then integrated to obtain the total PM2.5 evaporation loss. Results show that when PM2.5 particles are nearly neutral with pH in the range of 7-8, the evaporated concentrations predicted by the present model agree well with the experimental data with an average absolute difference of 20.2±11.1%. When PM2.5 aerosols are acidic with pH less than 3.5, additional loss of nitrate and chloride can occur due to chemical interactions between collected particles and strong acids which are not considered in the present model. Under pH neutral conditions, the theoretical model was then used to examine the effect of PM2.5 concentration, gas-to-particle ratio, ambient temperature and relative humidity on the extent of evaporation loss. Results show that evaporated PM2.5 concentration increases with increasing temperature and decreasing relative humidity, PM2.5 concentration and gas-to-particle ratio. © 2015 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/81847
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Institute of Environmental Engineering, National Chiao Tung University, Hsinchu, Taiwan; Environmental Analysis Laboratory, Environmental Protection Administration, Jongli, Taiwan
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| Recommended Citation: | |
Liu C,-N,, Lin S,et al. Theoretical model for the evaporation loss of PM2.5 during filter sampling[J]. Atmospheric Environment,2015-01-01,109
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