A simple and solvent-free analyticalmethod has been optimized for the determination of hydrocarbons (C6–C20)
from products of the petroleum industry in aqueous samples. Extraction and analysis were carried out using
headspace solid-phase microextraction (HS-SPME) and gas chromatography coupled with flame-ionization detector
(GC–FID). A ZB-5 capillary column (30 m×0.25 mminner diameter, 0.25 μmfilm thickness) was used for
GC separation and a 100 μm polydimethylsiloxane (PDMS) fiber was used to isolate the analytes. Parameters of
HS-SPME, analytes desorption and GC–FIDwere selected and an analytical procedure is proposed. Under the optimumconditions
the limits of detectionwere in the range of 2.0–13 μg L−1 and the relative standard deviations
were between 2.6 and 14%. The developed analytical method was successfully applied to the analysis of water
contaminated by unleaded petrol and unfiltered water used to extinguish a simulated fire.