IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Feasibility of coupling a thermal/optical carbon analyzer to a quadrupole mass spectrometer for enhanced PM2.5 speciation
Riggio, Gustavo M.1; Chow, Judith C.1,2; Cropper, Paul M.1; Wang, Xiaoliang1; Yatavelli, Reddy L. N.3; Yang, Xufei4; Watson, John G.1,2
2018
Source PublicationJOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
Volume68Issue:5Pages:463-476
SubtypeArticle
AbstractA thermal/optical carbon analyzer (TOA), normally used for quantification of organic carbon (OC) and elemental carbon (EC) in PM2.5 (fine particulate matter) speciation networks, was adapted to direct thermally evolved gases to an electron impact quadrupole mass spectrometer (QMS), creating a TOA-QMS. This approach produces spectra similar to those obtained by the Aerodyne aerosol mass spectrometer (AMS), but the ratios of the mass to charge (m/z) signals differ and must be remeasured using laboratory-generated standards. Linear relationships are found between TOA-QMS signals and ammonium (NH4+), nitrate (NO3-), and sulfate (SO42-) standards. For ambient samples, however, positive deviations are found for SO42-, compensated by negative deviations for NO3-, at higher concentrations. This indicates the utility of mixed-compound standards for calibration or separate calibration curves for low and high ion concentrations. The sum of the QMS signals across all m/z after removal of the NH4+, NO3-, and SO42- signals was highly correlated with the carbon content of oxalic acid (C2H2O4) standards. For ambient samples, the OC derived from the TOA-QMS method was the same as the OC derived from the standard IMPROVE_A TOA method. This method has the potential to reduce complexity and costs for speciation networks, especially for highly polluted urban areas such as those in Asia and Africa.Implications: Ammonium, nitrate, and sulfate can be quantified by the same thermal evolution analysis applied to organic and elemental carbon. This holds the potential to replace multiple parallel filter samples and separate laboratory analyses with a single filter and a single analysis to account for a large portion of the PM2.5 mass concentration.
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1080/10962247.2017.1394928
WOS KeywordAIR-QUALITY MEASUREMENTS ; AEROSOL MASS ; UNITED-STATES ; SOURCE APPORTIONMENT ; PARTICULATE MATTER ; FRESNO SUPERSITE ; ELEMENTAL CARBON ; ORGANIC AEROSOL ; CONSISTENCY ; SULFATE
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000431584700008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5165
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.Desert Res Inst, Div Atmopsher Sci, 2215 Raggio Pkwy, Reno, NV 89512 USA
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Shaanxi, Peoples R China
3.Air Resources Board, El Monte, CA USA
4.Univ Montana, Montana Tech, Butte, MT USA
Recommended Citation
GB/T 7714
Riggio, Gustavo M.,Chow, Judith C.,Cropper, Paul M.,et al. Feasibility of coupling a thermal/optical carbon analyzer to a quadrupole mass spectrometer for enhanced PM2.5 speciation[J]. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION,2018,68(5):463-476.
APA Riggio, Gustavo M..,Chow, Judith C..,Cropper, Paul M..,Wang, Xiaoliang.,Yatavelli, Reddy L. N..,...&Watson, John G..(2018).Feasibility of coupling a thermal/optical carbon analyzer to a quadrupole mass spectrometer for enhanced PM2.5 speciation.JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION,68(5),463-476.
MLA Riggio, Gustavo M.,et al."Feasibility of coupling a thermal/optical carbon analyzer to a quadrupole mass spectrometer for enhanced PM2.5 speciation".JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION 68.5(2018):463-476.
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