Journal of the Mass Spectrometry Society of Japan
Online ISSN : 1880-4225
Print ISSN : 1340-8097
ISSN-L : 1340-8097
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Volume 69, Issue 5
Displaying 1-25 of 25 articles from this issue
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Preface
Regular Paper
  • Development of a Multi-Turn Time-of-Flight Mass Spectrometer with a Proton Transfer Reaction Ion Source for the On-Site Real-Time Measurement of Volatile Organic Compounds
    Yosuke Kawai, Shinya Kawai, Hiroshi Furutani, Morio Ishihara, Reiki Wa ...
    2021 Volume 69 Issue 5 Pages 68-74
    Published: October 01, 2021
    Released on J-STAGE: October 15, 2021
    DOIhttps://doi.org/10.5702/massspec.21-119
    JOURNAL FREE ACCESS
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    Volatile organic compounds (VOCs) are ubiquitous gas species produced by various natural and anthropogenic processes, including burning fossil fuels, biomass burning, and biological activities. They are byproducts of numerous biological processes and an important causative agent of air pollution, such as photochemical oxidants and atmospheric particle matter (e.g., PM2.5).VOCs are diverse and highly chemically reactive; therefore, on-site real-time monitoring of the wide variety of VOCs, including unidentified ones and short-lived intermediates, is quite essential. We developed a prototype version of a portable, high-resolution, high-precision mass spectrometer for the VOCs’ real-time and on-site measurement by coupling a multi-turn time-of-flight mass spectrometer (MULTUM) and a simple proton transfer reaction (PTR) ion source. Performance evaluation confirmed that the mass resolving power was currently more than 7,000, although a temporal ion optics configuration limited it. Using a linear ion trap for ion accumulation significantly improved the signal-to-noise ratio of the mass spectrum. Linear response for two orders of concentrations and the limit of detection around 4 ppbv for one-minute data accumulation was attained for VOCs standard gas samples. Although the prototype has limited instrumental performance, with further fully taking advantage of the MULTUM, the PTR-MULTUM will be a unique addition to PTR mass spectrometry for VOC profiling.

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Special Issue: Memory of Dr. Hisao Nakata
Special Issue: Chubu-area Colloquium
Letter to the Editor
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