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Vol. 26 No. 16 (2014): Vol 26 Issue 16

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A Study on Optimal Combination of Adsorbents for Sampling of C4-C10 Hydrocarbons in Ambient Air and Analysis with Thermal Desorption Gas Chromatography Coupled with Mass Spectrometry (GC/MS)

https://doi.org/10.14233/ajchem.2014.17373
Young Kyo Seo
Department of Environmental Engineering, Yeungnam University, Gyeongsan-si-712 749, Republic of Korea
Lakshmi Narayana Suvarapu
Department of Environmental Engineering, Yeungnam University, Gyeongsan-si-712 749, Republic of Korea
Byoung-Yoon Cho
Department of Environmental Engineering, Yeungnam University, Gyeongsan-si-712 749, Republic of Korea
Sung-Ok Baek
Department of Environmental Engineering, Yeungnam University, Gyeongsan-si-712 749, Republic of Korea

Corresponding Author(s) : Sung-Ok Baek

sobaek@yu.ac.kr

Asian Journal of Chemistry, Vol. 26 No. 16 (2014): Vol 26 Issue 16

Abstract

This study was carried out to evaluate the sampling performance and analytical methodology for the measurement of hydrocarbons in ambient air. Usually C4-C10 hydrocarbons are determined with adsorbent tube sampling and automatic thermal desorption gas chromatography coupled with mass detector (GC/MS). In this study we determined 56 compounds including hazardous air pollutants such as, benzene, toluene, ethyl benzene, xylenes, 1,3-butadiene and halogenated hydrocarbons, etc. The methodology was investigated with a wide range of different adsorbents which are commercially available and frequently adopted for the volatile organic compounds measurement. From four adsorbents are tested which are three carbon-based adsorbents such as, carbograph 2TD, carbograph 1TD and carbopack X and one polymer-based adsorbent (Tenax TA). We compare the efficiencies of the single adsorbent and multiple adsorbents with respect to volatile organic compounds adsorption. The results indicates that the most suitable combination for C4-C10 hydrocarbon measurements is triple adsorbent tube containing carbograph 2TD, carbograph 1TD and carbopack X. This method was found to be well suitable for the sampling of a broad range of volatile organic compounds in ambient air compare to the traditional methods. The sampling performance was evaluated with respect to the safe sampling volume of volatile organic compounds with a single adsorbent and multiple adsorbents for standard and field samples.

Keywords

Volatile organic compounds Adsorbents Benzene Ambient air sampling GC/MS
Kyo Seo, Y., Narayana Suvarapu, L., Cho, B.-Y., & Baek, S.-O. (2014). A Study on Optimal Combination of Adsorbents for Sampling of C4-C10 Hydrocarbons in Ambient Air and Analysis with Thermal Desorption Gas Chromatography Coupled with Mass Spectrometry (GC/MS). Asian Journal of Chemistry, 26(16), 5283–5290. https://doi.org/10.14233/ajchem.2014.17373
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