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• W2093278944 abstract "► Carbon nanotubes assisted electromembrane extraction (CNTs/EME) was developed. ► Carbon nanotubes reinforced hollow fiber was used in this research. ► The CNTs serve as a sorbent and provide an additional pathway for solute transport. ► In comparison with the EME method, this method showed higher extraction efficiency. ► Determination of buprenorphine, a model of basic drugs, in urine samples was performed. In this work carbon nanotubes assisted electromembrane extraction (CNTs/EME) coupled with capillary electrophoresis (CE) and ultraviolet (UV) detection was developed for the determination of buprenorphine as a model of basic drugs from urine samples. Carbon nanotubes reinforced hollow fiber was used in this research. Here the CNTs serve as a sorbent and provide an additional pathway for solute transport. The presence of CNTs in the hollow fiber wall increased the effective surface area and the overall partition coefficient on the membrane; and lead to an enhancement in the analyte transport. For investigating the influence of the presence of CNTs in the SLM on the extraction efficiency, a comparative study was carried out between EME and CNTs/EME methods. Optimization of the variables affecting these methods was carried out in order to achieve the best extraction efficiency. Optimal extractions were accomplished with NPOE as the SLM, with 200 V as the driving force, and with pH 2.0 in the donor and pH 1.0 in the acceptor solutions with the whole assembly agitated at 750 rpm after 25 min and 15 min for EME and CNTs/EME, respectively. Under the optimized conditions, in comparison with the conventional EME method, CNTs/EME provided higher extraction efficiencies in shorter time. This method provided lower limit of detection (1 ng mL −1 ), higher preconcentration factor (185) and higher recovery (92). Finally, the applicability of this method was evaluated by the extraction and determination of buprenorphine in patients’ urine samples." @default.
• W2093278944 created "2016-06-24" @default.
• W2093278944 creator A5005831325 @default.
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• W2093278944 date "2013-03-01" @default.
• W2093278944 modified "2023-09-24" @default.
• W2093278944 title "Development and application of carbon nanotubes assisted electromembrane extraction (CNTs/EME) for the determination of buprenorphine as a model of basic drugs from urine samples" @default.
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• W2093278944 doi "https://doi.org/10.1016/j.aca.2012.12.046" @default.
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