| DOI: | 10.1016/j.atmosenv.2013.11.075
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| Scopus记录号: | 2-s2.0-84890891555
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| 论文题名: | Sampling and conditioning artifacts of PM2.5 in filter-based samplers |
| 作者: | Liu C; -N; , Lin S; -F; , Awasthi A; , 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: | 2014
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| 卷: | 85 | | 起始页码: | 48
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| 结束页码: | 53
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| 语种: | 英语
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| 英文关键词: | Evaporation loss
; PM2.5 artifacts
; Teflon filter
; TEOM-FDMS
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| Scopus关键词: | Dynamic measurement system
; Evaporation loss
; Field studies
; Filtration velocity
; Fine particles
; Tapered element oscillating microbalances
; Teflon filters
; TEOM-FDMS
; Atmospherics
; Earth atmosphere
; Evaporation
; air sampling
; artifact
; atmospheric correction
; atmospheric pollution
; evaporation
; particulate matter
; sampler
; absorption
; air sampler
; article
; artifact
; concentration (parameters)
; evaporation
; field study
; measurement accuracy
; molecular weight
; particle size
; particulate matter
; priority journal
; Taiwan
; velocity
; Taiwan
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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: | Field studies were conducted at Taiwan National Chiao-Tung University (NCTU) campus to evaluate the evaporation loss of fine particles (PM2.5) collected by the multi-filter PM10-PM2.5 sampler (MFPPS), which was collocated with a dichotomous sampler (Dichot, Andersen, Model SA-241), a WINS PM2.5 sampler (Thermo, Model 2000-FRM), and a tapered element oscillating microbalance with the filter dynamic measurement system (TEOM-FDMS, Thermo, Model 1405-DF). Porous-metal denuder samplers (PDSs) were installed in sampling channels of the MFPPS to measure the concentration of evaporated ion species. Results showed that the evaporation loss in PM2.5 was severe during sampling, accounting for 5.8-36.0% of the corrected PM2.5 concentration and the percentage increased with decreasing loaded particle mass and increasing filtration velocity. During 24-h sampling, the evaporated NH4+, NO3- and Cl- concentrations accounted for 9.5±6.2, 5.4±3.7, and 2.0±1.3% in corrected PM2.5 concentration, respectively, or 46.4±19.2, 66.9±18.5, and 74.4±14.0% in the concentration of each species, respectively. Due to the evaporation loss, PM2.5 concentrations measured by the WINS, Dichot, and MFPPS were lower than those the TEOM-FDMS by 16.6±9.0, 15.2±10.6 and 12.5±8.8%, respectively. When the MFPPS PM2.5 concentrations were corrected for the evaporated loss determined by the PDS, good agreement with those by the TEOM-FDMS was achieved. © 2013 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/80759
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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 300, Taiwan; Environmental Analysis Laboratory, Environmental Protection Administration, Jongli 320, Taiwan
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| Recommended Citation: | |
Liu C,-N,, Lin S,et al. Sampling and conditioning artifacts of PM2.5 in filter-based samplers[J]. Atmospheric Environment,2014-01-01,85
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