在电化学预处理玻碳电极上简单快速伏安法测定吗啡
Simple and rapid voltammetric determination of morphine at electrochemically pretreated glassy carbon electrodes.
作者信息
Li Fei, Song Jixia, Gao Dongmei, Zhang Qixian, Han Dongxue, Niu Li
机构信息
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, and Graduate University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, PR China.
出版信息
Talanta. 2009 Aug 15;79(3):845-50. doi: 10.1016/j.talanta.2009.05.011. Epub 2009 May 20.
A simple and rapid method for morphine detection has been described based on electrochemical pretreatment of glassy carbon electrode (GCE) which was treated by anodic oxidation at 1.75 V, following potential cycling in the potential range from 0 V to 1.0 V vs. Ag|AgCl reference electrode. The sensitivity for morphine detection was improved greatly and the detection limit was 0.2 microM. The reproducibility of the voltammetric measurements was usually less than 3% RSD for six replicate measurements. Moreover, this method could readily discriminate morphine from codeine. And an electrochemical detection of morphine in spiked urine sample was succeeded with satisfactory results.
基于玻碳电极（GCE）的电化学预处理，描述了一种简单快速的吗啡检测方法。该电极在相对于Ag|AgCl参比电极，于0 V至1.0 V的电位范围内进行电位循环后，在1.75 V下进行阳极氧化处理。吗啡检测的灵敏度大大提高，检测限为0.2微摩尔。伏安测量的重现性通常在六次重复测量中相对标准偏差（RSD）小于3%。此外，该方法能够轻松地区分吗啡和可待因。并且成功地对加标的尿液样本中的吗啡进行了电化学检测，结果令人满意。
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