期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 133, 期 2, 页码 607-612出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2008.03.023
关键词
nano-composite film; ZrO2/Au electrode; organophosphate pesticides; square wave voltammetry; parathion
资金
- Natural Science Foundation of China [20605016]
- Zhejiang Natural Science Foundation [Y404325]
This work describes the fabrication of ZrO2/Au nano-composite films and its application for voltammetric detection of organophosphate pesticides. The nano-composite ZrO2/Au film was prepared through a combination of sol-gel procedure and electroless plating that can be Carried out in a general chemistry]ab with no need for special facilities and reagents. The sensing performance of the ZrO2/Au nano-composite film electrode toward parathion was studied with square wave voltammetry. The nano-ZrO2 showed a strong affinity toward the phosphate group on parathion molecules, which provides sensitivity and selectivity of the sensing film. A linear relationship was obtained between the peak currents and the concentration of parathion, with a detection limit for standard samples of 3 ng/ml. In addition, interference studies showed that Structurally similar compounds without phosphate groups Would not interfere with the response toward parathion of the film electrode. (C) 2008 Elsevier B.V. All rights reserved.
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