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挥发性有机化合物在线分析的低成本替代方案

Low-Cost Alternative for Online Analysis of Volatile Organic Compounds.

作者信息

Rico Benjamin, Sauer Jon S, Prather Kimberly A, Pomeroy Robert S

机构信息

Department of Chemistry and Biochemistry, University of California, San Diego, California 92093, United States.

Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093, United States.

出版信息

Anal Chem. 2024 Jul 2;96(26):10543-10550. doi: 10.1021/acs.analchem.4c00916. Epub 2024 Jun 14.

DOI:10.1021/acs.analchem.4c00916
PMID:38875705
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11223098/
Abstract

The use of online mass spectrometry for detecting volatile organic compounds (VOCs) has proven to be a powerful technique, allowing for real-time analysis of many chemical and biochemical processes. Unfortunately, online mass spectrometry has had limited application due to high instrument costs and limited availability. Here, we detail the design, construction, and performance characteristics of a custom ion-molecule reactor retrofitted to a commonly used single quadrupole mass spectrometer to operate as an online chemical ionization mass spectrometer (CIMS). This low-cost modified CIMS is capable of limits of detection below 10 parts per trillion for select VOCs including dimethyl sulfide, dimethylamine, and trimethylamine.

摘要

使用在线质谱法检测挥发性有机化合物（VOCs）已被证明是一种强大的技术，可对许多化学和生化过程进行实时分析。不幸的是，由于仪器成本高和可用性有限，在线质谱法的应用受到了限制。在此，我们详细介绍了一种定制的离子-分子反应器的设计、构造和性能特征，该反应器被改装到一台常用的单四极杆质谱仪上，用作在线化学电离质谱仪（CIMS）。这种低成本的改良CIMS能够对包括二甲基硫、二甲胺和三甲胺在内的特定VOCs实现低于万亿分之十的检测限。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/d9f199fc3a00/ac4c00916_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/5246b6ed6fe7/ac4c00916_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/b5a3c7f5789d/ac4c00916_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/9718e85be027/ac4c00916_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/20f4915791b3/ac4c00916_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/d9f199fc3a00/ac4c00916_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/5246b6ed6fe7/ac4c00916_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/b5a3c7f5789d/ac4c00916_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/9718e85be027/ac4c00916_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/20f4915791b3/ac4c00916_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8249/11223098/d9f199fc3a00/ac4c00916_0005.jpg

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本文引用的文献

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Fluctuating pH for efficient photomixotrophic succinate production.波动 pH 值实现高效光混合营养型琥珀酸生产。
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