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Vol. 25 No. 8 (2013): Vol 25 Issue 8

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Adsorptive Stripping Voltammetric Determination of the Pesticide Chinomethionate in Fruits

https://doi.org/10.14233/ajchem.2013.14018
Ping Qiu
Department of Chemistry, Nanchang University, Nanchang, P.R. China
Xiao Cui Tian
Department of Chemistry, Nanchang University, Nanchang, P.R. China

Corresponding Author(s) : Ping Qiu

pingqiu@ncu.edu.cn

Asian Journal of Chemistry, Vol. 25 No. 8 (2013): Vol 25 Issue 8

Abstract

The electrochemical behaviour of the pesticide chinomethionate at a hanging mercury drop electrode is investigated. Differential pulse stripping voltammetry was used to determine chinomethionate in the presence of Britton-Robison (B-R) medium pH 4.56. Different parameters were tested to optimize the conditions for the determination of chinomethionate. The adsorbed form is reduced irreversibly. The linear concentration range is from 0.5-8.0 ng mL-1 chinomethionate. In this method, chinomethionate of 0.5 ng mL-1 with accumulation time 150 s can be determined successfully. This method was applied to analyze the spiked samples of apples and pears and found recoveries and relative standard deviation in the range of 89.33-98.00 % and 2.8-4.5 %, respectively.

Keywords

Differential pulse stripping voltammetry Chinomethionate Fruit Pesticide
Qiu, P., & Cui Tian, X. (2013). Adsorptive Stripping Voltammetric Determination of the Pesticide Chinomethionate in Fruits. Asian Journal of Chemistry, 25(8), 4457–4460. https://doi.org/10.14233/ajchem.2013.14018
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