Optimizing solvent extraction methods for activated carbon-based passive samplers in atmospheric volatile organic compound analysis: minimizing analytical interferences from pretreatment solvents and ensuring quantitative reliability.

IF 3.8 2区 化学 Q1 BIOCHEMICAL RESEARCH METHODS
Se-Eun Jang, Yong-Hyun Kim
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引用次数: 0

Abstract

A passive sampler was used to effectively monitor trace volatile organic compound (VOC) concentrations in the atmosphere. VOCs are typically extracted from passive samplers using CS2, which is a volatile and hazardous chemical that can leave residues and damage the mass spectrometry (MS) system during gas chromatography (GC)-MS. This study aims to develop and validate alternative solvent extraction methods using acetone, ethanol, n-hexane, and a solution of 99% acetone and 1% CS2 (ATCS) for VOCs from passive samplers using a standard GC-MS system. ATCS had the highest VOC extraction efficiency with the average value of 42.4 ± 21.4%, followed by acetone at 29.9 ± 17.6%. Ethanol and n-hexane exhibited extraction efficiencies of less than 9%. Despite the ATCS extraction efficiency of less than 50%, it demonstrated excellent analytical reproducibility (relative standard deviation of 1.62 ± 0.64%) and detection limit of 20.5 ± 12.9 ppt, which was significantly lower than 1 ppb. When used to extract and analyze VOCs from ambient air samples, ATCS yielded VOC concentrations of 0.57 ± 0.33 ppb, consistent with urban air levels. The variance in the outdoor VOC concentrations was less than 0.1 ppb, confirming its high reproducibility. Thus, the ATCS solvent extraction method developed in this study enables the accurate quantification of trace VOCs below 1 ppb, reduces MS damage, and mitigates health risks to analysts using GC-MS.

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来源期刊
CiteScore
8.00
自引率
4.70%
发文量
638
审稿时长
2.1 months
期刊介绍: Analytical and Bioanalytical Chemistry’s mission is the rapid publication of excellent and high-impact research articles on fundamental and applied topics of analytical and bioanalytical measurement science. Its scope is broad, and ranges from novel measurement platforms and their characterization to multidisciplinary approaches that effectively address important scientific problems. The Editors encourage submissions presenting innovative analytical research in concept, instrumentation, methods, and/or applications, including: mass spectrometry, spectroscopy, and electroanalysis; advanced separations; analytical strategies in “-omics” and imaging, bioanalysis, and sampling; miniaturized devices, medical diagnostics, sensors; analytical characterization of nano- and biomaterials; chemometrics and advanced data analysis.
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