IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Multi-wavelength optical measurement to enhance thermal/optical analysis for carbonaceous aerosol
Chen, L. -W. A.1,2,3; Chow, J. C.2,3; Wang, X. L.2; Robles, J. A.2; Sumlin, B. J.2; Lowenthal, D. H.2; Zimmermann, R.4; Watson, J. G.2,3
2015
Source PublicationATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN1867-1381
Volume8Issue:1Pages:451-461
SubtypeArticle
Abstract

A thermal/optical carbon analyzer equipped with seven-wavelength light source/detector (405-980 nm) for monitoring spectral reflectance (R) and transmittance (T) of filter samples allowed "thermal spectral analysis (TSA)" and wavelength (lambda)-dependent organic-carbon (OC)-elemental-carbon (EC) measurements. Optical sensing was calibrated with transfer standards traceable to absolute R and T measurements, adjusted for loading effects to report spectral light absorption (as absorption optical depth (tau(a,lambda))), and verified using diesel exhaust samples. Tests on ambient and source samples show OC and EC concentrations equivalent to those from conventional carbon analysis when based on the same wavelength (similar to 635 nm) for pyrolysis adjustment. TSA provides additional information that evaluates black-carbon (BC) and brown-carbon (BrC) contributions and their optical properties in the near infrared to the near ultraviolet parts of the solar spectrum. The enhanced carbon analyzer can add value to current aerosol monitoring programs and provide insight into more accurate OC and EC measurements for climate, visibility, or health studies.

WOS HeadingsScience & Technology ; Physical Sciences
DOI10.5194/amt-8-451-2015
WOS KeywordLight-absorption Measurements ; Elemental Carbon ; Black Carbon ; Organic-carbon ; United-states ; Fresno Supersite ; Brown Carbon ; Source Apportionment ; Particulate Matter ; Sampling Artifacts
Indexed BySCI
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000348977600033
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9400
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorChen, L. -W. A.
Affiliation1.Univ Nevada, Dept Environm & Occupat Hlth, Las Vegas, NV 89154 USA
2.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA
3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Sci & Technol, Xian, Peoples R China
4.Univ Rostock, Inst Chem, Chair Analyt Chem, Joint Mass Spectrometry Ctr, D-18055 Rostock, Germany
Recommended Citation
GB/T 7714
Chen, L. -W. A.,Chow, J. C.,Wang, X. L.,et al. Multi-wavelength optical measurement to enhance thermal/optical analysis for carbonaceous aerosol[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2015,8(1):451-461.
APA Chen, L. -W. A..,Chow, J. C..,Wang, X. L..,Robles, J. A..,Sumlin, B. J..,...&Watson, J. G..(2015).Multi-wavelength optical measurement to enhance thermal/optical analysis for carbonaceous aerosol.ATMOSPHERIC MEASUREMENT TECHNIQUES,8(1),451-461.
MLA Chen, L. -W. A.,et al."Multi-wavelength optical measurement to enhance thermal/optical analysis for carbonaceous aerosol".ATMOSPHERIC MEASUREMENT TECHNIQUES 8.1(2015):451-461.
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