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Anal Chim Acta

Title:		Portable fizzy extraction ion-mobility spectrometry system
Author(s):		Chen CH; Prabhu GRD; Yu KC; Elpa DP; Urban PL;
Address:		"Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 300044, Taiwan. Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 300044, Taiwan; Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu, 300093, Taiwan. Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 300044, Taiwan; Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, 101, Section 2, Kuang-Fu Rd., Hsinchu, 300044, Taiwan. Electronic address: urban@mx.nthu.edu.tw"
Journal Title:		Anal Chim Acta
Year:		2022
Volume:		20220315
Issue:
Page Number:		339699 -
DOI:		10.1016/j.aca.2022.339699
ISSN/ISBN:		1873-4324 (Electronic) 0003-2670 (Linking)
Abstract:		"Fizzy extraction (FE) is a technique that utilizes effervescence phenomenon to extract volatile organic compounds (VOCs) from liquid matrices for subsequent analysis. To induce effervescence, a liquid sample is first pressurized (at approximately 150 kPa) with an extractant gas (here, nitrogen), and then rapidly depressurized. In this work, we combine an in-house-built FE system with a commercial ion-mobility spectrometry (IMS) module in order to develop a portable analytical platform for in-situ analysis of VOCs in liquid samples. The size and shape of the FE-IMS platform are similar to those of a typical airline catering trolley. Its operation is enabled by several electronic and electromechanical components (a single-board computer, two microcontroller boards, a relay board, six DC-DC converters, a pressure regulator, a solenoid valve, and a pinch valve). The platform can carry out the extraction procedure as well as acquire, process, and transmit the data to a cloud-storage service. A custom-designed graphical user interface allows the user to select one of the available operation modes: full spectrum mode, ion current profile mode, and cleaning mode. The interface also allows one to follow the analysis progress, display the final result, and upload it to the Internet cloud. The platform has been characterized using three standards: ethyl acetate, ethyl propanoate, and butanone; and their limits of detection are 4.51 x 10(-8) M, 2.74 x 10(-8) M, and 1.26 x 10(-7) M, respectively. Furthermore, its ability to analyze real samples (alcoholic and non-alcoholic beverages) has been demonstrated"
Keywords:		*Ion Mobility Spectrometry/methods *Volatile Organic Compounds/analysis Ion mobility Liquid-gas extraction Portable analyzer Volatile organic compounds;
Notes:		"MedlineChen, Chi-Hsiang Prabhu, Gurpur Rakesh D Yu, Kai-Chiang Elpa, Decibel P Urban, Pawel L eng Netherlands 2022/04/11 Anal Chim Acta. 2022 Apr 29; 1204:339699. doi: 10.1016/j.aca.2022.339699. Epub 2022 Mar 15"