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
发表期刊JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
卷号68期号:5页码:463-476
文章类型Article
摘要A 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标题词Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1080/10962247.2017.1394928
关键词[WOS]AIR-QUALITY MEASUREMENTS ; AEROSOL MASS ; UNITED-STATES ; SOURCE APPORTIONMENT ; PARTICULATE MATTER ; FRESNO SUPERSITE ; ELEMENTAL CARBON ; ORGANIC AEROSOL ; CONSISTENCY ; SULFATE
收录类别SCI
语种英语
WOS研究方向Engineering ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目Engineering, Environmental ; Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000431584700008
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5165
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.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
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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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