Anodic stripping voltammetric determination of lead and cadmium with stencil-printed transparency electrodes

2020 ◽  
pp. 35-45
Author(s):  
Isabel Álvarez-Martos ◽  
Charles S. Henry ◽  
M. Teresa Fernández Abedul
Keyword(s):  
Voltammetric Determination ◽  
Lead And Cadmium ◽  
Anodic Stripping

Interference by Tin in AOAC Dry-Ash Voltammetric Method for Determination of Lead and Cadmium in Canned Foods

1988 ◽  
Vol 71 (4) ◽  
pp. 857-859
Author(s):  
Walter Holak ◽  
John J Specchio
Keyword(s):  
Tartaric Acid ◽  
False Positive ◽  
Supporting Electrolyte ◽  
Canned Food ◽  
Voltammetric Method ◽  
Lead And Cadmium ◽  
Anodic Stripping ◽  
Canned Foods ◽  
Positive Results

Abstract When lead and cadmium were determined in samples of canned food by the AOAC anodic stripping voltammetric method, an interference was observed which was believed to be tin(IV). This interference could cause false positive results for lead and cadmium. The electroactivity of tin(IV) was suppressed by increasing the concentration of tartaric acid in the supporting electrolyte from 0.005M to 0.1M after mixing with an equal volume of sample solution.

Square-wave anodic-stripping voltammetric determination of Cd, Pb and Cu in wine: Set-up and optimization of sample pre-treatment and instrumental parameters

2013 ◽  
Vol 104 ◽  
pp. 148-161 ◽  
Author(s):  
Silvia Illuminati ◽  
Anna Annibaldi ◽  
Cristina Truzzi ◽  
Carolina Finale ◽  
Giuseppe Scarponi
Keyword(s):  
Voltammetric Determination ◽  
Square Wave ◽  
Anodic Stripping ◽  
Pre Treatment ◽  
Set Up

2D bismuthene/graphene modified electrodes for the ultra-sensitive stripping voltammetric determination of lead and cadmium

2020 ◽  
Vol 336 ◽  
pp. 135726 ◽  
Author(s):  
Alexandros Ch Lazanas ◽  
Kyriaki Tsirka ◽  
Alkiviadis S. Paipetis ◽  
Mamas I. Prodromidis
Keyword(s):  
Modified Electrodes ◽  
Voltammetric Determination ◽  
Lead And Cadmium

scholarly journals Microfabricated Au-Film Sensors for the Voltammetric Determination of Hg(II)

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1518
Author(s):  
Maria Tsetsoni ◽  
Eleni Roditi ◽  
Christos Kokkinos ◽  
Anastasios Economou
Keyword(s):  
Electrode Surface ◽  
Limit Of Detection ◽  
Anodic Stripping Voltammetry ◽  
Stripping Voltammetry ◽  
Voltammetric Determination ◽  
Film Sensor ◽  
Au Film ◽  
Working Electrode ◽  
Anodic Stripping

In this work, a microfabricated Au-film sensor was designed and fabricated for thevoltammmetric determination of Hg(II). The electrode was fabricated on a silicon chip with astandard microengineering approach utilizing photolithography for patterning the electrode shapeand sputtering for deposition of thin Cr and Au films on the surface of the sensors. The sensorswere used for the determination of trace Hg(II) with anodic stripping voltammetry (ASV): initiallyHg(II) in the sample was accumulated on the Au working electrode surface by reduction andformation of an Au(Hg) amalgam followed by oxidation of the preconcentrated metallic Hg using asquare wave voltammetric scan. The limit of detection was 1.5μgL−1 and the coefficient of variationof 10 consecutive measurements was 3.1%.

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