| Evaluation of offline sampling for atmospheric C3-C11 non-methane hydrocarbons | |
Liu, Zhiguo ; Liu, Chengtang; He, Zhouming; Mu, Yujing; Zhang, Chenglong; Zhang, Yuanyuan; Liu, Pengfei; Wang, Yuzheng; Liu, Junfeng
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| 2022-03 | |
| Source Publication | JOURNAL OF ENVIRONMENTAL SCIENCES
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| ISSN | 1001-0742 |
| Volume | 113Issue:0Pages:132-140 |
| Abstract | The concentration variation of C3-C11 non-methane hydrocarbons (NMHCs) collected in several types of commercial flexible bags and adsorption tubes was systematically investigated using a gas chromatography-flame ionization detector (GC-FID) system. The percentage loss of each NMHC in the polyvinyl fluoride (PVF) bags was less than 5% during a 7-hr storage period; significant NMHCs loss was detected in aluminum foil composite film and fluorinated ethylene propylene bags. The thermal desorption efficiency of NMHCs for adsorption tubes filled Carbopack B and Carboxen1000 sorbents was greater than 95% at 300 degrees C, and the loss of NMHCs in the adsorption tubes during 20-days storage at 4 degrees C was less than 8%. The thermal desorption efficiency for C11 NMHCs in the adsorption tube filled with Carbograph 1 and Carbosieve S. absorbents was less than 40% at 300 degrees C, and pyrolysis of the absorbents at 330 degrees C interfered significantly with the measurements of some alkenes. The loss of alkenes was significant when NMHCs were sampled by cryo-enrichment at -90 degrees C in the presence of O-3 for the online NMHC measurements, and negligible for enrichment using adsorption tubes at 25 degrees C. Although O-3 scrubbers have been widely used to eliminate the influence of O-3 on NMHC measurements, the loss of NMHCs with carbon numbers greater than 8 was more than 10%. Therefore, PVF bags and adsorption tubes filled Carbopack B and Carboxen1000 sorbents were recommended for the sampling of atmospheric NMHCs. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| Department | 大气环境与污染控制实验室 ; 大气环境与污染控制实验室 |
| Keyword | VOLATILE ORGANIC-COMPOUNDS HEALTH-RISK ASSESSMENT AMBIENT AIR BENZENE HOMOLOGS OZONE REMOVAL TEDLAR BAGS VOCS STABILITY POLLUTION PRECURSORS |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47404 |
| Collection | 大气环境与污染控制实验室 |
| Corresponding Author | Liu, Junfeng |
| Affiliation | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Urban Atmospher Environm, Inst Reg Environm, Xiamen 361021, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.3Clear Sci & Technol Co Ltd, Beijing 100029, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Zhiguo,Liu, Chengtang,He, Zhouming,et al. Evaluation of offline sampling for atmospheric C3-C11 non-methane hydrocarbons[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,113(0):132-140. |
| APA | Liu, Zhiguo.,Liu, Chengtang.,He, Zhouming.,Mu, Yujing.,Zhang, Chenglong.,...&Liu, Junfeng.(2022).Evaluation of offline sampling for atmospheric C3-C11 non-methane hydrocarbons.JOURNAL OF ENVIRONMENTAL SCIENCES,113(0),132-140. |
| MLA | Liu, Zhiguo,et al."Evaluation of offline sampling for atmospheric C3-C11 non-methane hydrocarbons".JOURNAL OF ENVIRONMENTAL SCIENCES 113.0(2022):132-140. |
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