Application and optimization of headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-flame-ionization detector (GC-FID) to determine products of the petroleum industry in aqueous samples

► In this study HS-SPME-GC-FID methodology was developed. ► The 100 μm of polydimethylsiloxane coating for adsorption of analytes was used. ► Hydrocarbons from products of the petroleum industry were determined. ► Method was applied to the analysis of water samples. ► Procedure is a simpler, lower cost and less labor intensive than normally used.