A Study on Optimal Combination of Adsorbents for Sampling of C-4-C-10 Hydrocarbons in Ambient Air and Analysis with Thermal Desorption Gas Chromatography Coupled with Mass Spectrometry (GC/MS)

作者：Seo Young Kyo; Suvarapu Lakshmi Narayana; Cho Byoung Yoon; Baek Sung Ok^*

来源：Asian Journal of Chemistry, 2014, 26(16): 5283-5290.

DOI：10.14233/ajchem.2014.17373

• Volatile organic compounds
• Adsorbents
• Benzene
• Ambient air sampling
• GC/MS

This study was carried out to evaluate the sampling performance and analytical methodology for the measurement of hydrocarbons in ambient air. Usually C-4-C-10 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 C-4-C-10 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.

• 出版日期2014-8