Detection of Gasoline Residues Present in Household Materials Via Headspace-solid Phase Microextraction and Gas Chromatography‒mass Spectrometry

Abstract

This paper describes the detection and persistence of gasoline residues present in household materials, cotton fabric, cardboard, and carpet. These samples were spiked with 50 μL of gasoline and dried for a controlled period of time at room temperature prior to chemical analysis. The extraction and chemical analysis of gasoline residues were conducted via headspace-solid phase microextraction and gas chromatography‒mass spectrometry, respectively. Our data showed that gasoline residues were detected in the cotton fabric samples after up to 7 days of drying, while both the cardboard and carpet samples could retain gasoline residues for longer than 3 weeks. The adoption of small-sized vials for headspace analysis improved the detection limit of gasoline residues in the samples. The physical features of the samples, such as porosity, thickness, and number of layers, were found to be more important than chemical compositions for the increased persistence of gasoline residues.