A combined liquid three-phase micro-extraction and differential pulse voltammetric method for preconcentration and detection of ultra-trace amounts of buprenorphine using a modified pencil electrode

• Published in: Talanta (Oxford) Vol. 116; pp. 1113 - 1120
• Main Authors: Ensafi, Ali A., Khoddami, Elaheh, Rezaei, B.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 15.11.2013
• Subjects: Buprenorphine; Buprenorphine - blood; Buprenorphine - urine; Calibration; detection limit; Differential pulse voltammetry; Electrochemical Techniques; electrochemistry; Electrodes; extraction; Graphite - chemistry; Human; Humans; Hydrogen-Ion Concentration; Limit of Detection; Liquid Phase Microextraction - instrumentation; Liquid Phase Microextraction - methods; Liquid three-phase micro extraction; Liquids; Membranes, Artificial; microextraction; mixing; Modified pencil graphite electrode; Morphine Dependence - blood; Morphine Dependence - urine; Narcotics - blood; Narcotics - urine; Pencils; Phases; Polytetrafluorethylene membrane; Polytetrafluoroethylene - chemistry; salt concentration; Sodium Chloride - chemistry; Solvents; Urine; Voltammetry; Modified pencil graphite electrode; Buprenorphine; Polytetrafluorethylene membrane; Liquid three-phase micro extraction; Differential pulse voltammetry
• ISSN: 0039-9140; 1873-3573; 1873-3573
• DOI: 10.1016/j.talanta.2013.08.016

A combination of polytetrafluorethylene membrane-based liquid three-phase micro-extraction and voltammetry was used for the micro-separation and determination of buprenorphine. Type of the organic solvent used, pH levels of the donor and acceptor phases, salt concentration, extraction time, stirring...