▎ 摘　　要

In the present study, on-chip electromembrane surrounded solid phase microextraction (EM-SPME) was employed in the determination of tricyclic antidepressants (TCAs), including amitriptyline, nortriptyline, imipramine, desipramine, maprotiline, and sertraline, from various biological fluids. In this regard, poly(3,4-ethylenedioxythiophene)-graphene oxide (PEDOT-GO) was electrodeposited on an SPME fiber as a conductive coating, then the fiber played the acceptor-electrode role during the extraction. Thus, the immigration of the analytes under the influence of an electric field and their absorption onto the fiber coating were accomplished simultaneously. Under the optimized conditions, the limits of detection for the target analytes were acquired in the range of 0.005-0.025 mu g L-1 using gas chromatography-mass spectrometry. The linearity of the method was 0.010-500 mu g L-1 for the imipramine and sertraline, 0.025-500 mu g L-1 for the amitriptyline, nortriptyline, and desipramine, and 1.000-250 mu g L-1 for the maprotiline (R-2 >= 0.9984). Moreover, this method provided suitable precision and fiber-to-fiber reproducibility, with RSDs