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Open AccessArticle

Compact FTICR Mass Spectrometry for Real Time Monitoring of Volatile Organic Compounds

1
Laboratoire de Chimie Physique, CNRS, Univ. Paris Sud, Université Paris Saclay, 91405 Orsay, France
2
AlyXan, Centre Hoche, 91260 Juvisy-sur-Orge, France
*
Authors to whom correspondence should be addressed.
Sensors 2018, 18(5), 1415; https://doi.org/10.3390/s18051415
Received: 3 April 2018 / Revised: 29 April 2018 / Accepted: 29 April 2018 / Published: 3 May 2018
(This article belongs to the Special Issue Smart Sensing System for Real-Time Monitoring)
In this paper, we present a compact Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS) designed for real time analysis of volatile organic compounds (VOCs) in air or in water. The spectrometer is based on a structured permanent magnet made with NdFeB segments. Chemical ionization is implemented inside the ICR cell. The most widely used reaction is the proton transfer reaction using H3O+ precursor ions, but other ionic precursors can be used to extend the range of species that can be detected. Complex mixtures are studied by switching automatically from one precursor to another. The accuracy obtained on the mass to charge ratio (Δm/z 5 × 10−3), allows a precise identification of the VOCs present and the limit of detection is 200 ppb without accumulation. The time resolution is a few seconds, mainly limited by the time necessary to come back to background pressure after the gas pulses. The real time measurement will be illustrated by the monitoring of VOCs produced during the thermal degradation of a polymer and by an example where three different precursor ions are used alternatively to monitor a gas sample. View Full-Text
Keywords: chemical ionization; mass spectrometry; real time analysis; Fourier transform ion cyclotron resonance; direct quantification; volatile organic compounds chemical ionization; mass spectrometry; real time analysis; Fourier transform ion cyclotron resonance; direct quantification; volatile organic compounds
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MDPI and ACS Style

Lemaire, J.; Thomas, S.; Lopes, A.; Louarn, E.; Mestdagh, H.; Latappy, H.; Leprovost, J.; Heninger, M. Compact FTICR Mass Spectrometry for Real Time Monitoring of Volatile Organic Compounds. Sensors 2018, 18, 1415.

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