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首页> 外文期刊>Acta Chimica Slovenica >Rapid and Sensitive Voltammetric Determination of Aclonifen in Water Samples
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Rapid and Sensitive Voltammetric Determination of Aclonifen in Water Samples

机译：快速灵敏的伏安法测定水样中的乙醛

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摘要

This paper presents the use of square wave voltammetry (SWV) and square wave adsorptive stripping voltammetry (SWAdSV) in conjunction with a cyclic renewable silver amalgam film electrode (Hg(Ag)FE) for the determination of aclonifen in spiked water samples. A reduction peak at -0.65 V versus Ag/AgCl was obtained in the selected buffer (borax buffer with pH 9.2), exhibiting the characteristics of an irreversible reaction. The effect of square wave (SW) frequency, SW amplitude and step potential, as well as accumulation parameters (time and potential) were studied to select the optimal experimental conditions. The calibration curve was linear in the aclonifen concentration range from 1.0 x 10(-7) to 1.0 x 10(-6) mol L-1 and from 1.0 x 10(-8) to 1.0 x 10(-7) mol L-1 for SWV and SWAdSV, respectively. The detection and quantification limits were found to be 3.1 x 10(-8) mol L-1; 1.0 x 10(-7) mol L-1 and 2.9 x 10(-9) mol L-1; 9.6 x 10(-9) mol L-1 for SWV and SWAdSV, respectively. The proposed method was applied successfully in the determination of aclonifen in spiked water samples. The developed procedure can be adequate at least for screening purposes, where positive results should be confirmed by more selective method.
机译：本文介绍了方波伏安法（SWV）和方波吸附溶出伏安法（SWAdSV）与循环可再生银汞合金薄膜电极（Hg（Ag）FE）一起用于测定加标水样品中的阿氯苯胺。在选定的缓冲液（pH 9.2的硼砂缓冲液）中获得了相对于Ag / AgCl的-0.65 V的还原峰，表现出不可逆反应的特征。研究了方波（SW）频率，SW振幅和阶跃电势以及累积参数（时间和电势）的影响，以选择最佳实验条件。校准曲线在aclonifen浓度范围为1.0 x 10（-7）至1.0 x 10（-6）mol L-1和1.0 x 10（-8）至1.0 x 10（-7）mol L- SWV和SWAdSV分别为1。检出限和定量限为3.1 x 10（-8）mol L-1; 1.0 x 10（-7）mol L-1和2.9 x 10（-9）mol L-1;对于SWV和SWAdSV，分别为9.6 x 10（-9）mol L-1。该方法成功用于加标水样中阿氯苯胺的测定。所开发的程序至少对于筛查目的是足够的，在筛查中应通过更具选择性的方法来确认阳性结果。

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