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An in-source helical membrane inlet single photon ionization time-of-flight mass spectrometer for automatic monitoring of trace VOCs in water

文献类型：期刊论文

作者Wu, Chenxin1,2; Liu, Wei1,2; Jiang, Jichun1; Wang, Yan1,2; Hou, Keyong1; Li, Haiyang1
刊名TALANTA
出版日期2019-01-15
卷号192页码:46-51
ISSN号0039-9140
关键词In-source Helical membrane Single photon ionization Automatic monitoring Trace VOCs Water
DOI10.1016/j.talanta.2018.09.013
通讯作者Hou, Keyong(houky@dicp.ac.cn) ; Li, Haiyang(hli@dicp.ac.cn)
英文摘要An in-source, helical membrane inlet single photon ionization time-of-flight mass spectrometry (SPI-TOFMS) has been developed to improve the detection sensitivity of trace volatile organic compounds (VOCs) in water. A helical winding membrane and a four-stage differential pumping system of TOFMS was designed to improve and maintain the vapor pressure of analyte, which is linearly associated with the sensitivity of SPI. The helical winding increased the length of the hollow fiber membrane (HFM) from 7 cm to 100 cm and the pressure inside of SPI source was elevated from 3.6 Pa to 28 Pa, and then the sensitivity was increased by 16, 34.7, 32.3, 17.9 and 13.9 times for benzene, ethyl tert-butyl ether (ETBE), aniline, p-xylene, and chlorobenzene (MCBz) respectively. The limits of quantitation (LOQs) of benzene, ETBE, aniline, p-xylene and MCBz were 0.014, 0.143, 0.556, 0.036, 0.025 mu g L-1 respectively with a measurement time of 50 s, which were enhanced by more than one order of magnitude compared to our previous work (reference [32]). The in-source design of helical winding membrane i.e. putting the membrane inside the SPI source dramatically reduced the response time to 1.33 min. This system has been evaluated for VOCs in sewage water of different laboratory buildings and automatic monitoring the pollutants in sewage water from a biological laboratory building. The automatic continuous analysis of organic pollutants in water has very important significance and broad application prospect for online assessment of water quality.
WOS关键词VOLATILE ORGANIC-COMPOUNDS ; COMPLEX AQUEOUS SAMPLES ; CHEMICAL-IONIZATION ; ONLINE MEASUREMENT ; REAL-TIME ; INTERFACE ; MIMS ; AIR ; CONTAMINANTS ; QUANTITATION
资助项目National Special Fund for Development of Major Research Equipment and Instrument[21375129] ; National Special Fund for Development of Major Research Equipment and Instrument[21675155] ; National Special Fund for Development of Major Research Equipment and Instrument[2011YQ05006904] ; National High-Tech Research and Development Plan[2014AA06A501]
WOS研究方向Chemistry
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000449443900007
资助机构National Special Fund for Development of Major Research Equipment and Instrument ; National Special Fund for Development of Major Research Equipment and Instrument ; National High-Tech Research and Development Plan ; National High-Tech Research and Development Plan ; National Special Fund for Development of Major Research Equipment and Instrument ; National Special Fund for Development of Major Research Equipment and Instrument ; National High-Tech Research and Development Plan ; National High-Tech Research and Development Plan ; National Special Fund for Development of Major Research Equipment and Instrument ; National Special Fund for Development of Major Research Equipment and Instrument ; National High-Tech Research and Development Plan ; National High-Tech Research and Development Plan ; National Special Fund for Development of Major Research Equipment and Instrument ; National Special Fund for Development of Major Research Equipment and Instrument ; National High-Tech Research and Development Plan ; National High-Tech Research and Development Plan
源URL[http://cas-ir.dicp.ac.cn/handle/321008/166660]  
专题大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者Hou, Keyong; Li, Haiyang
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100039, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Chenxin,Liu, Wei,Jiang, Jichun,et al. An in-source helical membrane inlet single photon ionization time-of-flight mass spectrometer for automatic monitoring of trace VOCs in water[J]. TALANTA,2019,192:46-51.
APA Wu, Chenxin,Liu, Wei,Jiang, Jichun,Wang, Yan,Hou, Keyong,&Li, Haiyang.(2019).An in-source helical membrane inlet single photon ionization time-of-flight mass spectrometer for automatic monitoring of trace VOCs in water.TALANTA,192,46-51.
MLA Wu, Chenxin,et al."An in-source helical membrane inlet single photon ionization time-of-flight mass spectrometer for automatic monitoring of trace VOCs in water".TALANTA 192(2019):46-51.

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来源：大连化学物理研究所

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