Determination of MTBE, TBA and BTEX in Soil by Headspace Gas Chromatography-Mass Spectrometry

Bulletin of the Korean chemical society

Ho-Sang Shin¹ 

关键词: MTBE;    TBA;    BTEX;    Soil;    HS GC-MS;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A headspace gas chromatographic mass spectrometric (GC-MS) assay method was developed for the simultaneous determination of methyl tertiary butyl ether (MTBE), tert-butyl alcohol (TBA) and benzene, toluene, ethyl benzene and xylene (BTEX) in soil contaminated with gasoline. 2 g of soil sample were placed in a 10 mL headspace vial filled with 5 mL of phosphoric acid solution (pH 3) saturated with NaCl, and the solution was spiked with fluorobenzene as an internal standard and sealed with a cap. The vial was heated in a heating block for 40 min at 80 oC. The detection limits of the assay were 0.08-0.12 μg/kg for the analytes. For five independent determinations at 10 and 50 μg/kg, the relative standard deviations were less than 10%. The method was used to analyze fifty six soil samples collected from various regions contaminated with gasoline in Korea. The developed method may be valuable for the monitoring of the analytes in soil.

【 授权许可】

Unknown