| Title: | A Novel Microwave-Induced Plasma Ionization Source for Ion Mobility Spectrometry |
| Author(s): | Dai J; Zhao Z; Liang G; Duan Y; |
| Address: | "Analytical and Testing Center, Sichuan University, Chengdu 610064, P.R. China. College of Chemical Engineering, Sichuan University, Chengdu 610065, P.R. China. College of Chemistry, Sichuan University, Chengdu 610065, P.R. China. Research Center of Analytical Instrumentation, Key Laboratory of Bio-resource and Eco-environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, P.R. China" |
| ISSN/ISBN: | 2045-2322 (Electronic) 2045-2322 (Linking) |
| Abstract: | "This work demonstrates the application of a novel microwave induced plasma ionization (MIPI) source to ion mobility spectrometry (IMS). The MIPI source, called Surfatron, is composed of a copper cavity and a hollow quartz discharge tube. The ion mobility spectrum of synthetics air has a main peak with reduced mobility of 2.14 cm(2)V(-1)s(-1) for positive ion mode and 2.29 cm(2)V(-1)s(-1) for negative ion mode. The relative standard deviations (RSD) are 0.7% and 1.2% for positive and negative ion mode, respectively. The total ion current measured was more than 3.5 nA, which is much higher than that of the conventional (63)Ni source. This indicates that a better signal-to-noise ratio (SNR) can be acquired from the MIPI source. The SNR was 110 in the analysis of 500 pptv methyl tert-butyl ether (MTBE), resulting in the limit of detection (SNR = 3) of 14 pptv. The linear range covers close to 2.5 orders of magnitude in the detection of triethylamine with a concentration range from 500 pptv to 80 ppbv. Finally, this new MIPI-IMS was used to detect some volatile organic compounds, which demonstrated that the MIPI-IMS has great potential in monitoring pollutants in air" |
| Notes: | "PubMed-not-MEDLINEDai, Jianxiong Zhao, Zhongjun Liang, Gaoling Duan, Yixiang eng Research Support, Non-U.S. Gov't England 2017/03/14 Sci Rep. 2017 Mar 13; 7:44051. doi: 10.1038/srep44051" |
