Optical Calibration and Equivalence of a Multiwavelength Thermal/Optical Carbon Analyzer | |
Riggio, Gustavo5; Kohl, Steven D.5; Trimble, Dana L.5; Chen, L. -W. Antony1,5; Gronstal, Steven B.5; Sumlin, Benjamin J.5; Wang, Xiaoliang2,5; Chow, Judith C.2,4,5; Watson, John G.2,4,5; Zimmermann, Ralf3 | |
刊名 | AEROSOL AND AIR QUALITY RESEARCH
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2015-08-01 | |
卷号 | 15期号:4页码:1145-+ |
关键词 | Brown Carbon Multiwavelength Aerosol Light Absorption Angstrom Absorption Exponent |
ISSN号 | 1680-8584 |
DOI | 10.4209/aaqr.2015.02.0106 |
文献子类 | Article |
英文摘要 | Organic and elemental carbon (OC and EC) are operationally-defined by the measurement process, so long-term trends may be interrupted with instrumentation changes. A modification to the U.S. IMPROVE carbon analysis protocol and hardware is examined that replaces the 633 nm laser light used for OC charring adjustments with seven wavelengths ranging from 405 to 980 nm, including one at 635 nm. Reflectance (R) and Transmittance (T) values for each wavelength are made traceable to primary standards through transfer standards consisting of a range of aerosol deposits on filter media similar to that of the analyzed samples. R and T values are assigned to these filters using a UV/VIS spectrometer calibrated with these standards. Using ambient and source (e.g., diesel exhaust, flaming biomass, and smoldering biomass) samples, it is demonstrated that R and T calibration is independent of the sample type. Total carbon (TC), OC, and EC comparisons with the earlier hardware design for urban- and non-urban samples demonstrate equivalence, within precisions derived from replicate analyses, for the 633 nm and 635 nm wavelengths. Several uses of the additional multiwavelength information are identified, including: 1) ground-truthing of multi-spectral remote sensors; 2) improving estimates of the Earth's radiation balance; 3) associating specific organic compounds with their light absorption properties; and 4) appropriating sources of black and brown carbon. |
WOS关键词 | Aerosol Light-absorption ; Air-quality Measurements ; Black Carbon ; Elemental Carbon ; Source Apportionment ; Particulate Matter ; Fresno Supersite ; Fine Particles ; United-states ; Brown Carbon |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | TAIWAN ASSOC AEROSOL RES-TAAR |
WOS记录号 | WOS:000358999400001 |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/9279] ![]() |
专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室(2010~) |
通讯作者 | Chow, Judith C. |
作者单位 | 1.Univ Nevada, Dept Environm & Occupat Hlth, Las Vegas, NV 89154 USA 2.Univ Nevada, Grad Fac, Reno, NV 89503 USA 3.Univ Rostock, Joint Mass Spectrometry Ctr, Chair Analyt Chem, Inst Chem, D-18055 Rostock, Germany 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China 5.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA |
推荐引用方式 GB/T 7714 | Riggio, Gustavo,Kohl, Steven D.,Trimble, Dana L.,et al. Optical Calibration and Equivalence of a Multiwavelength Thermal/Optical Carbon Analyzer[J]. AEROSOL AND AIR QUALITY RESEARCH,2015,15(4):1145-+. |
APA | Riggio, Gustavo.,Kohl, Steven D..,Trimble, Dana L..,Chen, L. -W. Antony.,Gronstal, Steven B..,...&Mayorga, Sierra R..(2015).Optical Calibration and Equivalence of a Multiwavelength Thermal/Optical Carbon Analyzer.AEROSOL AND AIR QUALITY RESEARCH,15(4),1145-+. |
MLA | Riggio, Gustavo,et al."Optical Calibration and Equivalence of a Multiwavelength Thermal/Optical Carbon Analyzer".AEROSOL AND AIR QUALITY RESEARCH 15.4(2015):1145-+. |
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