2-氨基苯甲酸络合体同时吸附阴极溶出伏安法测定痕量铜、铅和镉的研究

IF 1.1 Q4 ELECTROCHEMISTRY

Portugaliae Electrochimica Acta Pub Date : 2022-01-01 DOI:10.4152/pea.2022400501

E. Zarei, A. Izadyar, A. Asghari, M. Rajabi

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引用次数: 2

摘要

本研究以2-氨基苯甲酸(ABA)为络合配体，采用吸附阴极溶出伏安法(AdCSV)同时测定金属离子。该方法基于Cu(II)， Pb(II)和Cd(II)离子+ ABA吸附积累，将其悬挂在汞滴电极(HMDE)上，然后通过差分脉冲阴极溶出伏安法(DPSCV)进行还原。考察了pH、ABA浓度、积累时间、电位和扫描速率等实验参数。在优化条件下，Cu、Pb、Cd浓度分别在5 ~ 120ng /mL -1、5 ~ 150ng /mL -1和5 ~ 120ng /mL -1范围内建立了线性校准曲线。Cu、Pb和Cd的检出限分别为2.05、1.78和2.26 ng/mL -1。该方法已作为实际样品应用于自来水和工业废水中这些元素的测定。

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Development of 2-aminobenzoic Acid as a Complexing Ligand for Simultaneous Adsorptive Cathodic Stripping Voltammetric Determination of Trace Copper, Lead and Cadmium

In this study, 2-aminobenzoic acid (ABA) has been used as a complexing ligand for metal ions simultaneous determination by adsorptive cathodic stripping voltammetry (AdCSV). This selective and sensitive method was based on Cu(II), Pb(II) and Cd(II) ions + ABA adsorptive accumulation, by hanging them onto a mercury drop electrode (HMDE), followed by their reduction through differential pulse cathodic stripping voltammetry (DPSCV). Experimental parameters, such as pH, ABA concentration, accumulation time, potential and scan rate, were examined. Under the optimized conditions, linear calibration curves were established for Cu, Pb and Cd concentrations, in the ranges from 5 to 120, 5 to 150 and 5 to 120 ng/mL -1 , respectively. Detection limits (LODs) of 2.05, 1.78 and 2.26 ng/mL -1 were obtained for Cu, Pb and Cd, respectively. The proposed method was applied for the determination of these elements in tap and industrial waste water, as real samples.

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来源期刊

Portugaliae Electrochimica Acta ELECTROCHEMISTRY-

CiteScore

2.30

自引率

16.70%

发文量

期刊介绍： Portugaliae Electrochimica Acta is a bi-monthly Journal published by the Portuguese Electrochemical Society since 1983. Portugaliae Electrochimica Acta publishes original papers, brief communications, reviews and letters concerned with every aspect of theory and practice of electrochemistry, as well as articles in which topics on history, science policy, education, etc. in the electrochemical field (teaching or research) may be discussed.