公开(公告)号：US20200309799A1

公开(公告)日：2020-10-01

申请号：US16756029

申请日：2018-10-15

申请人： UNIVERSITEIT ANTWERPEN

发明人： Karolien DE WAEL ,  Mats DE JONG ,  Anca Stefana FLOREA ,  Nick SLEEGERS

IPC分类号： G01N33/94 ,  G01N27/48

摘要： A method for determining a narcotic in a mixture comprising at least one interferant. The method comprises: (a) determining a voltage at which, in absence of the interferant, a voltammetric signal of the narcotic can be detected; (b) contacting an electrode with the mixture comprising the at least one interferant and potentially comprising the narcotic; (c) applying a pretreatment potential to the electrode for a duration of at least 5 seconds, the pretreatment potential measuring between −0.4 V and −2 V versus Ag/AgCl; (d) measuring a voltammetric response of the mixture, the measurement comprising at least the determined voltage; and (e) determining whether the narcotic is present in the mixture by analyzing whether the voltammetric signal of the narcotic, resolved from a voltammetric signal of the interferant, can be detected in the measured voltammetric response.