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使用质子转移反应飞行时间质谱仪（PTR-TOF-MS）测量乙二醛：表征与校准。

Glyoxal measurement with a proton transfer reaction time of flight mass spectrometer (PTR-TOF-MS): characterization and calibration.

作者信息

Stönner Christof, Derstroff Bettina, Klüpfel Thomas, Crowley John N, Williams Jonathan

机构信息

Max Planck-Institute for Chemistry, Mainz, Germany.

出版信息

J Mass Spectrom. 2017 Jan;52(1):30-35. doi: 10.1002/jms.3893.

DOI:10.1002/jms.3893
PMID:27712005
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6681138/
Abstract

We examine the potential for PTR-TOF-MS systems to quantitatively measure glyoxal in ambient air by characterizing the response of the instrument to a dilute glyoxal sample, calibrating the system as a function of humidity. The concentration of glyoxal in a sample air-stream was measured with an UV absorption spectrometer in parallel to a PTR-TOF-MS. This calibration demonstrated that the PTR-TOF-MS has a relatively low sensitivity to glyoxal particularly at high humidity. Extensive fragmentation of glyoxal to formaldehyde was observed. This behaviour not only desensitizes PTR-MS system to glyoxal; it may also pose a problem to the quantification of formaldehyde. © 2016 The Authors. Journal of Mass Spectrometry Published by John Wiley & Sons Ltd.

摘要

我们通过表征仪器对稀释乙二醛样品的响应，将系统校准为湿度的函数，来研究质子转移反应-飞行时间质谱（PTR-TOF-MS）系统定量测量环境空气中乙二醛的潜力。在与PTR-TOF-MS并行的情况下，用紫外吸收光谱仪测量样品气流中乙二醛的浓度。该校准表明，PTR-TOF-MS对乙二醛的灵敏度相对较低，尤其是在高湿度条件下。观察到乙二醛大量裂解为甲醛。这种行为不仅使PTR-MS系统对乙二醛不敏感；它也可能给甲醛的定量带来问题。© 2016作者。《质谱学报》由约翰·威利父子有限公司出版。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/63247b58dfd9/JMS-52-30-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/eb4da9a3a099/JMS-52-30-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/b0a5368d4099/JMS-52-30-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/63247b58dfd9/JMS-52-30-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/eb4da9a3a099/JMS-52-30-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/0676680f9eb3/JMS-52-30-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/b0a5368d4099/JMS-52-30-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c8f7/6681138/63247b58dfd9/JMS-52-30-g008.jpg

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