Determination of ultra-trace amount of halo-hydrocarbon in nitrogen by atmospheric pressure ionization mass spectrometry

被引：0

作者：

Bi, Zhe ^{[1
]}

Zhou, Zeyi ^{[1
]}

Liu, Zixuan ^{[2
]}

Ma, Shuli ^{[1
]}

Ma, Haomiao ^{[1
]}

Wang, Zhen ^{[1
]}

Huang, Peng ^{[1
]}

Wang, Man ^{[1
]}

机构：

[1] Natl Inst Metrol, 18 Bei San Huan Dong Lu, Beijing 100029, Peoples R China

[2] Beijing Ctr Phys & Chem Anal, Beijing 100089, Peoples R China

来源：

PROCEEDINGS OF THE 2017 3RD INTERNATIONAL FORUM ON ENERGY, ENVIRONMENT SCIENCE AND MATERIALS (IFEESM 2017) | 2017年 / 120卷

关键词：

R134a; standard gas mixture; atmospheric pressure ionization; electron impact ionization;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The monitoring of halo hydrocarbons such as R134a in atmosphere has attract great attention due to its strong global warming effect. In this study, on-line atmospheric pressure ionization (API) and electron impact ionization (EI) mass spectroscopy was used to measure R134a at ambient level (ppt, 10(-12) mol/mol). A dilution system was developed to test the linearity of API/EI MS. Results showed that the sensitivity of API MS was much higher than that of EI MS. A good linearity could be obtained at the range of 10-75 ppt for API MS. The API MS could directly measure R134a at ambient level without preconcentration devices.

引用

页码：1506 / 1509

页数：4

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