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DOI	10.1016/j.atmosenv.2020.117647
	Evaluation of thermal optical analysis (TOA) using an aqueous binary mixture
	Grimes C.D.; Conny J.M.; Dickerson R.R.
发表日期	2020
ISSN	1352-2310
卷号	241
英文摘要	Thermal-Optical Analysis (TOA), a commonly implemented technique used to measure the amount of particulate carbon in the atmosphere or deposited on a filter substrate, distinguishes organic carbon (OC) from elemental carbon (EC) through the monitoring of laser light, heating, and measuring evolved carbon. Here, we present a method to characterize the TOA transmission method with an aqueous binary mixture containing EC and OC that can easily be deposited onto a filter at low volumes. Known amounts of EC and OC were deposited onto a quartz-fiber filter and analyzed with different temperature protocols. Results with the NIST-EPA-C temperature protocol agreed with the reference values to better than 2% for EC, OC, total carbon (TC), and EC/TC. Indicated TC for all temperature protocols was within 5% of the reference value while all protocols reproduced EC/TC ratios with an uncertainty less than 10%. © 2020 Elsevier Ltd
关键词	Black carbon Elemental carbon Organic carbon aerosol Thermal optical transmission analysis TOT
语种	英语
scopus关键词	Binary mixtures; Organic lasers; Thermal conductivity; Elemental carbon; Particulate carbon; Quartz fiber filters; Reference values; Temperature protocol; Thermal-optical analysis; Total carbon; Transmission methods; Organic carbon; carbon; elemental carbon; organic carbon; unclassified drug; aqueous solution; elemental carbon; environmental monitoring; optical method; aqueous solution; Article; polarimetry; priority journal; temperature; thermal optical analysis
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248937
作者单位	Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States; Materials Measurement Science Division, National Institutes of Standards and Technology, Gaithersburg, MD 20899, United States; Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD 20742, United States
推荐引用方式 GB/T 7714	Grimes C.D.,Conny J.M.,Dickerson R.R.. Evaluation of thermal optical analysis (TOA) using an aqueous binary mixture[J],2020,241.
APA	Grimes C.D.,Conny J.M.,&Dickerson R.R..(2020).Evaluation of thermal optical analysis (TOA) using an aqueous binary mixture.ATMOSPHERIC ENVIRONMENT,241.
MLA	Grimes C.D.,et al."Evaluation of thermal optical analysis (TOA) using an aqueous binary mixture".ATMOSPHERIC ENVIRONMENT 241(2020).