“…Similarly, MAE was coupled with headspace SPME and GC/MS in the determination of octyl and nonyl phenols in paper. Optimization of MAE-assisted headspace SPME conditions of phenol from cigarette pad samples was investigated by Sha et al 79 When investigating MAE for a particular type of application, consideration needs to be given not only to the analyte recovery and the method sensitivity but to the matrix interferences. A divinylbenzene-carboxen-polydimethylsiloxane was employed to sample the headspace for 45 min in order to extract the phenols at low ppb concentrations.…”