“…The first was to determine the effect of the absorption temperature and time on extraction efficiency. First, the sample (2.0 g) of 125 m particle size was hermetically sealed in an 8 mL vial, then SPME fibre was suspended in the HS and equilibrated for nine different time ranges of 5,10,15,20,25,30,40,50 and 60 min in a thermostatic bath, which was set at the temperature of either 40, 50, 60, 80 or 100 • C. Only that part of the vial with the solid matrix was submerged, to keep the SPME fibre as cool as possible to improve the vapour phase/absorbent fibre coating partition coefficient [18]. The second group of experiments was performed to establish the effect of headspace volume on extraction efficiency.…”