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
发表期刊ATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN1867-1381
卷号8期号:1页码:451-461
文章类型Article
摘要

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标题词Science & Technology ; Physical Sciences
DOI10.5194/amt-8-451-2015
关键词[WOS]Light-absorption Measurements ; Elemental Carbon ; Black Carbon ; Organic-carbon ; United-states ; Fresno Supersite ; Brown Carbon ; Source Apportionment ; Particulate Matter ; Sampling Artifacts
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000348977600033
出版者COPERNICUS GESELLSCHAFT MBH
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9400
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Chen, L. -W. A.
作者单位1.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
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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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