Determination of Cd(II) in some foodstuffs by anodic stripping pulse voltammetry (ASPV) using glassy carbon electrode

被引：2

作者：

Ramadan, A. A. ^{[1
]}

Mandil, H. ^{[1
]}

Saleh, M. A. ^{[1
]}

机构：

[1] Univ Aleppo, Fac Sci, Dept Chem, Aleppo, Syria

来源：

ANALYTICAL LETTERS | 2006年 / 39卷 / 07期

关键词：

foodstuffs; anodic stripping voltammetry; cadmium; determination;

D O I：

10.1080/00032710600668822

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Cadmium in the presence of 0.04 M NaCl as the electrolyte was determined using stripping voltammetry with superimposed constant amplitude pulses of negative polarity (SVPNP) or positive polarity (SVPPP), and differential pulses stripping voltammetry using rotating disc glass carbon electrode (RDGCE). The SVPNP was found to give the greatest sensitivity. The anodic peak was obtained at potential -850 to -795 mV due to the oxidation of cadmium to cadmium(II). Linear calibration curves were obtained in the concentration range between 1.5x10(-9) -2x10(-1)0 M. The relative standard deviation is 4.25% at very low concentration of 2x10(-10) M. This method was successfully applied to the determination of cadmium in some foodstuffs (wheat and its products, vegetables) after acid digestion.

引用

页码：1411 / 1420

页数：10

共 14 条

[1] Cadmium detection via boron-doped diamond electrodes:: surfactant inhibited stripping voltarnmetry [J].