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dc.contributor.authorLiu, Chun-Nanen_US
dc.contributor.authorLin, Sih-Fanen_US
dc.contributor.authorAwasthi, Amiten_US
dc.contributor.authorTsai, Chuen-Jinnen_US
dc.contributor.authorWu, Yueh-Chuenen_US
dc.contributor.authorChen, Chung-Fangen_US
dc.date.accessioned2014-12-08T15:34:57Z-
dc.date.available2014-12-08T15:34:57Z-
dc.date.issued2014-03-01en_US
dc.identifier.issn1352-2310en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.atmosenv.2013.11.075en_US
dc.identifier.urihttp://hdl.handle.net/11536/23767-
dc.description.abstractField 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 PM(2.)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 PM(2.)5 concentrations were corrected for the evaporated loss determined by the PDS, good agreement with those by the TEOM-FDMS was achieved. (C) 2013 Elsevier Ltd. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectPM2.5 artifactsen_US
dc.subjectEvaporation lossen_US
dc.subjectTeflon filteren_US
dc.subjectTEOM-FDMSen_US
dc.titleSampling and conditioning artifacts of PM2.5 in filter-based samplersen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.atmosenv.2013.11.075en_US
dc.identifier.journalATMOSPHERIC ENVIRONMENTen_US
dc.citation.volume85en_US
dc.citation.issueen_US
dc.citation.spage48en_US
dc.citation.epage53en_US
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000331417700006-
dc.citation.woscount0-
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