Journal
TALANTA
Volume 79, Issue 3, Pages 845-850Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2009.05.011
Keywords
Morphine; Electrochemical pretreatment; Voltammetric detection; Glassy carbon electrode
Categories
Funding
- NSFC, China [20827004]
- Ministry of Science and Technology [2006BAKB05, 2007BAK26B06]
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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 vertical bar AgCl reference electrode. The sensitivity for morphine detection was improved greatly and the detection limit was 0.2 mu M. 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. (C) 2009 Elsevier B.V. All rights reserved.
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