Application of the polysilicone fullerene coating for solid-phase microextraction in the determination of semi-volatile compounds

Solid-phase microextraction using polysilicone fullerene (PF) coating has b een applied for the determination of semi-volatile compounds. Detection lim its at the 10 ng l(-1) similar to mug l(-1) level were achieved using flame ionization wide linear range was obtained with precision below 7% relative standard deviation. Parameters that affect the extraction process were inv estigated, which included sampling time, desorption time, sampling temperat ure, and salting out effect. Compared to the non-polar commercial polydimet hylsiloxane (PDMS) coating, the PF coating has higher extraction efficiency , better selectivity and greater sensitivity for aromatic compounds. The ex perimental results revealed the thermal stability and life span are superio r to commercially available PDMS. The PF coating has been demonstrated to p ossess planarity molecular recognition. The theoretical study confirmed tha t quantification is feasible under non-equilibrium conditions by use of the PF coating. (C) 2001 Elsevier Science B.V. All rights reserved.