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Experimental instruments and technique
Double-membrane sampling system in a mass spectrometer for the study of exhaled air
V. T. Kogana, A. S. Antonova, Yu. V. Chichagova, O. S. Victorova-Leclerca, I. V. Victorova, A. V. Kozlenokb a Ioffe Institute, St. Petersburg
b Almazov National Medical Research Centre of the Ministry of Health of the Russian Federation, St. Petersburg
Abstract:
A double-membrane sample-introduction system is described that enables mass spectrometric determination of volatile organic compounds in air, while ensuring their detection limits are as low as a few fractions of ppb of sample composition in real time with a response delay from a few seconds to a few dozens of seconds. It includes two membrane interfaces separated by a volume, the gas pressure in which is maintained through a channel with an adjustable evacuation cross-section. The results of numerical simulation and experimental testing of the system are provided. A technique for selecting and calculating system parameters is described. The possibility of using this system for diagnosing diseases by trace amounts of biomarkers in exhaled air is discussed.
Keywords:
Sample-introduction System, Membrane Interface, Response Delay, Low Penetrating Ability, Proton Transfer Reaction Mass Spectrometry (PTR-MS).
Received: 01.06.2017 Revised: 19.02.2018
Citation:
V. T. Kogan, A. S. Antonov, Yu. V. Chichagov, O. S. Victorova-Leclerc, I. V. Victorov, A. V. Kozlenok, “Double-membrane sampling system in a mass spectrometer for the study of exhaled air”, Zhurnal Tekhnicheskoi Fiziki, 88:10 (2018), 1591–1598; Tech. Phys., 63:10 (2018), 1543–1551
Linking options:
https://www.mathnet.ru/eng/jtf5806 https://www.mathnet.ru/eng/jtf/v88/i10/p1591
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Statistics & downloads: |
Abstract page: | 33 | Full-text PDF : | 15 |
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