Feasibility of coupling a thermal/optical carbonanalyzer to a quadrupole mass spectrometer forenhanced PM2.5 speciation
Gustavo M. Riggio1; Chow, Judith C1,2; Cropper,Paul M1; Wang, XL(Wang, Xiaoliang)1; Yatavelli,Reddy L. N3; Yang,XF(Yang,Xufei)4; Watson,John G1,2
2018-05
发表期刊Journal of the Air & Waste Management Association
卷号68期号:5页码:463-476
文章类型期刊论文
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.
关键词Pm2.5 Speciatiopn Material Balance Thermal Analysis Quartz-fiber Mass Spectra
DOI10.1080/10962247.2017.1394928
收录类别SCI
所属项目编号1214163 ; 1464501 ; C2350000894
语种英语
项目资助者National Science Foundation ; National Science Foundation ; National Park Service IMPROVE Carbon Analysis Contract ; National Park Service IMPROVE Carbon Analysis Contract
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5273
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Watson,John G
作者单位1.Desert Research Institute, Reno, NV, USA
2.State Key Laboratory of Loess and Quaternary Geology (SKLLQG) , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an , People's Republic of China
3.Air Resources Board , El Monte , CA , USA
4.Montana Tech of the University of Montana , Butte , MT , USA
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Gustavo M. Riggio,Chow, Judith C,Cropper,Paul M,et al. Feasibility of coupling a thermal/optical carbonanalyzer to a quadrupole mass spectrometer forenhanced PM2.5 speciation[J]. Journal of the Air & Waste Management Association,2018,68(5):463-476.
APA Gustavo M. Riggio.,Chow, Judith C.,Cropper,Paul M.,Wang, XL.,Yatavelli,Reddy L. N.,...&Watson,John G.(2018).Feasibility of coupling a thermal/optical carbonanalyzer to a quadrupole mass spectrometer forenhanced PM2.5 speciation.Journal of the Air & Waste Management Association,68(5),463-476.
MLA Gustavo M. Riggio,et al."Feasibility of coupling a thermal/optical carbonanalyzer to a quadrupole mass spectrometer forenhanced PM2.5 speciation".Journal of the Air & Waste Management Association 68.5(2018):463-476.
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