Influences of relative humidities and temperatures on the collection of C-2-C-5 aliphatic hydrocarbons with multi-bed (Tenax TA, Carbograph 1TD, Carboxen 1003) sorbent tube method

doi:10.1016/j.atmosenv.2016.12.007

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	Influences of relative humidities and temperatures on the collection of C-2-C-5 aliphatic hydrocarbons with multi-bed (Tenax TA, Carbograph 1TD, Carboxen 1003) sorbent tube method
	Qu, Linli 2; Cao, Junji 1,3; Huang, Yu 3; Dai, Wenting 3; Ho, Steven Sai Hang 1,3; Chow, Judith C.1,3; Watson, John G.1,3; Wang, Liqin 3
刊名	ATMOSPHERIC ENVIRONMENT
	2017-02-01
卷号	151 期号:2017 页码:45-51
关键词	Vocs Sorbent Tube Thermal Desorption Breakthrough Relative Humidity
DOI	10.1016/j.atmosenv.2016.12.007
文献子类	Article
英文摘要	Volatile organic compounds (VOCs) are measured with sorbent tubes followed by thermal desorption (TD) analysis. Water vapor in the atmosphere affects sampling breakthrough and results in low collection efficiency. This paper reports the effect of relative humidity (RH) and temperature on the collection of 57 ozone precursors with a multi-bed tube composed of three different strengths of adsorbents (Tenax TA, Carbograph 1 TD, and Carboxen 1003). Unacceptable breakthrough values for volatile C-2-C-5 aliphatic compounds were observed under high (>60%) RHs. The breakthrough volumes (BV) for C-2 aliphatic compounds were reduced 13-22 fold under 90% RH. Dry-purge with inert helium gas removes excessive water content before the TD analysis but also causes a maximum of 40% loss of target analytes. Condensation is another pathway for water retention. The tube temperature should be regulated at 5 - 10 degrees C above the air temperature to minimize condensation under RHs >30%. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词	VOLATILE ORGANIC-COMPOUNDS ; THERMAL-DESORPTION ; SAMPLING METHODS ; AIR ; WATER ; SPECTROMETRY ; PERFORMANCE ; CARBOTRAP ; MIXTURE ; VOCS
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000392678000006
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5541]
专题	地球环境研究所_粉尘与环境研究室
作者单位	1.Desert Res Inst, Div Atmosphere Sci, Reno, NV 89512 USA 2.Hong Kong Premium Serv & Res Lab, Kowloon, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Qu, Linli,Cao, Junji,Huang, Yu,et al. Influences of relative humidities and temperatures on the collection of C-2-C-5 aliphatic hydrocarbons with multi-bed (Tenax TA, Carbograph 1TD, Carboxen 1003) sorbent tube method[J]. ATMOSPHERIC ENVIRONMENT,2017,151(2017):45-51.
APA	Qu, Linli.,Cao, Junji.,Huang, Yu.,Dai, Wenting.,Ho, Steven Sai Hang.,...&Wang, Liqin.(2017).Influences of relative humidities and temperatures on the collection of C-2-C-5 aliphatic hydrocarbons with multi-bed (Tenax TA, Carbograph 1TD, Carboxen 1003) sorbent tube method.ATMOSPHERIC ENVIRONMENT,151(2017),45-51.
MLA	Qu, Linli,et al."Influences of relative humidities and temperatures on the collection of C-2-C-5 aliphatic hydrocarbons with multi-bed (Tenax TA, Carbograph 1TD, Carboxen 1003) sorbent tube method".ATMOSPHERIC ENVIRONMENT 151.2017(2017):45-51.