The desorption time was 5 min, the injection port was maintained at 250 C, and the column consisted of an HP-5 ms (30 m 0.25 mm i.d., 0.25 lm thick; J&W Scientific, Agilent).
The desorptiontime was 5 min, the injection port was maintained at250 C, and the column consisted of an HP-5 ms (30 m 0.25 mmi.d., 0.25 lm thick; J&W Scientific, Agilent).