Electrochemical Analysis of Pesticides by Nano Zirconia Modified Film Electrode
Authors: Wang, Min; Li, Zhuyun; Gao, Yudong
Source: Sensor Letters, Volume 6, Number 6, December 2008 , pp. 966-969(4)
Publisher: American Scientific Publishers
Abstract:Based on the high surface area of nanoparticles and selective affinity for phosphate groups of zirconia, this work reports on the fabrication of nano zirconia modified gold film electrode and evaluation of its electrochemical sensing property toward organophosphate pesticides. A simple sol–gel procedure with oxalic acid as the precipitating reagent was developed to prepare nano zirconia particles. Under optimized experimental condition the average particle size of the fabricated zirconia was 15 nm with a narrow distribution range. Electroless plating was employed to fabricate nanocomposite ZrO2/Au film on alumina substrate. Sensing performance of the film electrode toward parathion as a representative organophosphate pesticide was studied with cyclic voltammetry and square wave voltammetry. Experimental conditions to obtain the best analytical signal were optimized including the doping level of nano ZrO2 in the sensing film. The nano zirconia modified film electrode showed sensitive and selective response toward parathion, and should be suitable for other organophosphate pesticides and their simultaneous detection.
Document Type: Research Article
Publication date: December 1, 2008
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- ingentaconnect is not responsible for the content or availability of external websites