Performance of a Bismuth Bulk Rotating Disk Electrode for Heavy Metal Analysis: Determination of Lead in Environmental Samples

2012 ◽  
Vol 24 (5) ◽  
pp. 1170-1177 ◽  
Author(s):  
María de la Gala Morales ◽  
Mª Rosario Palomo Marín ◽  
Lorenzo Calvo Blázquez ◽  
Eduardo Pinilla Gil
Keyword(s):  
Heavy Metal ◽  
Environmental Samples ◽  
Rotating Disk ◽  
Rotating Disk Electrode ◽  
Disk Electrode ◽  
Metal Analysis ◽  
Heavy Metal Analysis ◽  
Analysis Determination

Applicability of the bismuth bulk rotating disk electrode for heavy metal monitoring in undisturbed environmental and biological samples: determination of Zn(ii) in rainwater, tap water and urine

2014 ◽  
Vol 6 (21) ◽  
pp. 8668-8674 ◽  
Author(s):  
María de la Gala Morales ◽  
M. Rosario Palomo Marín ◽  
Lorenzo Calvo Blázquez ◽  
Eduardo Pinilla Gil
Keyword(s):  
Heavy Metal ◽  
Biological Samples ◽  
Tap Water ◽  
Rotating Disk ◽  
Environmental Water ◽  
Rotating Disk Electrode ◽  
Disk Electrode ◽  
Environmental And Biological Samples ◽  
Metal Monitoring

Bismuth bulk rotating disk electrode applicability for SWASV of Zn(ii) and Cd(ii) in undisturbed environmental water and urine samples.

scholarly journals Determination of Iron in Spinach Using Linear Sweep Voltammetry at Iodine-Coated Platinum Rotating Disk Electrode

2019 ◽  
Vol 102 (2) ◽  
pp. 666-668
Author(s):  
Mohammad Amayreh ◽  
Mohammed Khair Hourani
Keyword(s):  
Iron Content ◽  
Platinum Electrode ◽  
Rotating Disk ◽  
Rotating Disk Electrode ◽  
Limiting Current ◽  
Disk Electrode ◽  
Voltammetric Analysis ◽  
Voltammetric Techniques ◽  
Steady State Current

Abstract Background: In contrast to the hyper-reactive platinum electrode, iodine-coated platinum electrode shows remarkable inertness toward adsorption and surface processes. For this reason, iodine-coated platinum electrode lends itself to interesting voltammetric applications. Hydrodynamic voltammetric analysis, one of the voltammetric techniques family, has many advantages over stationary voltammetric techniques inter aliathe steady state current and the higher sensitivity. Objective: The present work is aimed at utilization of iodine-coated platinum rotating disk electrode for analysis of iron in spinach.Methods: The developed method is based on a voltammetric sweep at an iodine-coated rotating-disk platinum electrode. The optimized experimental parameters included a potential scan from –0.20 to 0.85 V versus Ag/AgCl/[Cl-] = 1.0 M, 50 mV/s scan rate, and a rotation rate of 1000 rpm. Results: Oxidation of iron at the iodine-coated platinum rotating disk electrode was manifested by a wave at E1/2 = +0.72 V. The limiting current was found to exhibit an excellent linearity with the concentration of iron (R2 = 0.996). The detection limit was 0.0 7 ppm. A comparative analytical study on determination of iron content in spinach samples was conducted by the voltammetric method and ICP-OES method. Application of the paired t-test to the results indicated that the null hypothesis is valid at P = 0.05. Conclusions: A sensitive and selective validated method was developed for determination of iron content in spinach. Highlights: A simple, fast, and reliable voltammetric methodwas developed for iron analysis in spinach. The main feature of the developed method is removing the effect of cationic interferences.

Sign in / Sign up

Export Citation Format

Share Document