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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
Ho, Steven Sai Hang1,2; Chow, Judith C.1,2; Watson, John G.1,2; Wang, Liqin1; Qu, Linli3; Dai, Wenting1; Huang, Yu1; Cao, Junji1,2
2017-02-01
发表期刊ATMOSPHERIC ENVIRONMENT
卷号151期号:2017页码:45-51
文章类型Article
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.
关键词Vocs Sorbent Tube Thermal Desorption Breakthrough Relative Humidity
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1016/j.atmosenv.2016.12.007
关键词[WOS]VOLATILE ORGANIC-COMPOUNDS ; THERMAL-DESORPTION ; SAMPLING METHODS ; AIR ; WATER ; SPECTROMETRY ; PERFORMANCE ; CARBOTRAP ; MIXTURE ; VOCS
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000392678000006
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5541
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
2.Desert Res Inst, Div Atmosphere Sci, Reno, NV 89512 USA
3.Hong Kong Premium Serv & Res Lab, Kowloon, Hong Kong, Peoples R China
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GB/T 7714
Ho, Steven Sai Hang,Chow, Judith C.,Watson, John G.,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 Ho, Steven Sai Hang.,Chow, Judith C..,Watson, John G..,Wang, Liqin.,Qu, Linli.,...&Cao, Junji.(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 Ho, Steven Sai Hang,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.
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