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The Electrochemical Analysis of Cadmium in Choline Chloride/Urea Deep Eutectic Solvent Electrolyte at Carbon Nanotubes Modified Electrode

机译:碳纳米管修饰电极在氯化胆碱/尿素深共熔电解质中镉的电化学分析

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The electrochemical behavior of Cd at choline chloride/urea electrolyte and multi-wall carbonnanotubes modified electrode was investigated by cyclic voltammetry (CV) and differential pulsevoltammetry (DPV). A couple of sensitive and quasi-reversible redox peaks of Cd was obtained with - 0.75 V of oxidation peak potential (Epa) and -0.91 of reduction peak potential (Epc) ( = 0.16 V) in-1choline chloride /urea ionic liquids and 0.1molL HAc-NaAc mixed buffer system (pH 5.4). Asensitive DPV method for the determination of Cd was proposed. The oxidization peak was linearly-4_ -2 -1 related to the concentration of Cd in the range of 6.010 1.510 gmL , the detection limit was-5 -1 6.810 gmL . The proposed method is quick, sensitive, reliable and can be used for thedetermination of Cd in environment and food.
机译:采用循环伏安法(CV)和差示脉冲伏安法(DPV)研究了Cd在氯化胆碱/尿素电解质和多壁碳纳米管修饰电极上的电化学行为。在-1氯化胆碱/尿素离子液体中,氧化镉的几个敏感峰和准可逆氧化还原峰为-0.75 V的氧化峰电位(Epa)和-0.91的还原峰电位(Epc)(= 0.16 V)和0.1 mol L HAc-NaAc混合缓冲液系统(pH 5.4)。提出了一种灵敏的DPV法测定镉。氧化峰与Cd浓度在6.010〜1.510 gmL范围内呈线性线性-4_ -2 -1,检出限为-5 -1 6.810 gmL。该方法快速,灵敏,可靠,可用于环境和食品中镉的测定。

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