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学科主题: 物理化学
题名: An in-source stretched membrane inlet for on-line analysis of VOCs in water with single photon ionization TOFMS
作者: Hou, Keyong1;  Li, Fanglong2;  Chen, Wendong1, 3;  Chen, Ping1, 3;  Xie, Yuanyuan1, 3;  Zhao, Wuduo1, 3;  Hua, Lei1;  Pei, Kemei2;  Li, Haiyang1
通讯作者: 李海洋
刊名: ANALYST
发表日期: 2013
DOI: 10.1039/c3an00659j
卷: 138, 期:19, 页:5826-5831
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 1
项目归属: 102
产权排名: 待补充
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
资助者: 1,1
研究领域[WOS]: Chemistry
英文摘要: An in-source, stretched, hollow fiber membrane (HFM) inlet has been developed to improve the sensitivity of on-line time-of-flight mass spectrometry (TOFMS) with a vacuum ultraviolet (VUV) lamp based single photon ionization (SPI) source for the direct analysis of liquid samples. A 2-cm HFM was stretched to 8 cm in length, and placed in the ion source and directly under the VUV lamp window with a distance of 15 mm. Compared with the conventional flow-through configuration under the same experimental conditions, the signal intensities of selected volatile organic compounds (VOCs) of methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), benzene, toluene and p-xylene were increased over 5-fold in magnitude, and the response time was shortened to one-third. The limits of detection (LOD) of MTBE, ETBE, benzene, toluene and p-xylene ranged from 0.25 to 1.3 mu g L-1 with a measurement time of 60 s, and three orders of linear range were obtained with correlation coefficients of 0.9972-0.9992. The present results suggest that the in-source stretched HFM is a simple and effective way to increase the sensitivity and shorten response time of the membrane inlet, and we believe that it will also be beneficial to other types of on-line mass spectrometer for the on-line analysis of VOCs in water with a VUV lamp based SPI ion source.
关键词[WOS]: INTRODUCTION MASS-SPECTROMETRY ;  VOLATILE ORGANIC-COMPOUNDS ;  DESORPTION CHEMICAL-IONIZATION ;  VACUUM-ULTRAVIOLET LAMP ;  TRACE-LEVEL ANALYSIS ;  INTERFACE ;  AIR ;  QUANTITATION ;  MIMS ;  MATRICES
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000323722600041
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119178
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Hou, Keyong,Li, Fanglong,Chen, Wendong,et al. An in-source stretched membrane inlet for on-line analysis of VOCs in water with single photon ionization TOFMS[J]. ANALYST,2013,138(19):5826-5831.
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