基于触控笔的环境电离质谱仪用于分析液体、粘性和固体样品中的挥发性物质和半挥发性物质

IF 5.7 2区 化学 Q1 CHEMISTRY, ANALYTICAL
Yi-Ying Wu, Chin-Pao Chiu, Yu-Chie Chen
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Stylus Pen-based Ambient Ionization Mass Spectrometry for the Analysis of Volatiles and Semivolatiles from Liquid, Viscous, and Solid Samples

Stylus Pen-based Ambient Ionization Mass Spectrometry for the Analysis of Volatiles and Semivolatiles from Liquid, Viscous, and Solid Samples

Background

Ambient ionization mass spectrometry (MS) has attracted significant attention due to its simplicity and ease of operation. Contactless, or field-induced, ionization is one of the ambient ionization techniques. In this approach, no direct electrical contact or additional voltage is required on the ionization-assisted substrate. Instead, the electric field is induced by the high voltage applied to the orifice of the mass spectrometer. However, there remains a demand for exploring compact and readily available ionization substrates for use in field-induced ionization techniques. Results: A stylus pen, typically used for touch screens, is used as an ion source for analyzing volatile and semivolatile organic compounds. Vapors originating from volatile and semivolatile compounds placed underneath the inlet of the mass spectrometer were ionized when the stylus pen was positioned near the inlet, which is applied with a high voltage. The limits of detection for semivolatiles and volatiles were in the range of mM to a few hundred nM, depending on the vapor pressure and chemical structures of these analytes. Additionally, semivolatile compounds found in real samples could be directly detected using our method. Moreover, we also demonstrated the feasibility of using the stylus pen as the sampling probe to pick up samples from the surface of a glass slide, followed by bringing the pen close to the inlet of the mass spectrometer for direct MS analysis using our approach. Significance: The developed method provides a straightforward approach for analyzing volatiles and semi-volatiles under ambient conditions. Ionization of the analyte vapor near the mass spectrometer inlet can readily occur by placing a stylus pen close to the inlet, highlighting simplicity as the main advantage of the developed method. Consequently, this method can be easily coupled with a mass spectrometer that has a high voltage applied to its orifice.
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来源期刊
Analytica Chimica Acta
Analytica Chimica Acta 化学-分析化学
CiteScore
10.40
自引率
6.50%
发文量
1081
审稿时长
38 days
期刊介绍: Analytica Chimica Acta has an open access mirror journal Analytica Chimica Acta: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Analytica Chimica Acta provides a forum for the rapid publication of original research, and critical, comprehensive reviews dealing with all aspects of fundamental and applied modern analytical chemistry. The journal welcomes the submission of research papers which report studies concerning the development of new and significant analytical methodologies. In determining the suitability of submitted articles for publication, particular scrutiny will be placed on the degree of novelty and impact of the research and the extent to which it adds to the existing body of knowledge in analytical chemistry.
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