UnivTrevesV1, Main, Exploration, bibRecord, 002570

Modified solid electrodes for stripping voltammetric determination of tin

Identifieur interne : 002570 ( Main/Exploration ); précédent : 002569; suivant : 002571

Modified solid electrodes for stripping voltammetric determination of tin

Auteurs : C. Faller [Allemagne] ; G. Henze [Allemagne] ; N. Stojko [Russie] ; S. Saraeva [Russie] ; K. Brainina [Russie]

Source :

Fresenius' journal of analytical chemistry [ 0937-0633 ] ; 1997.

RBID : Pascal:97-0398192

Descripteurs français

Pascal (Inist)
- Analyse chimique, Voltammétrie, Réoxydation, Electrode solide, Matériau modifié, Couche épaisse, Etain, Limite détection, Jus fruit.

English descriptors

KwdEn :
- Chemical analysis, Detection limit, Fruit juices, Modified material, Reoxidation, Solid electrode, Thick films, Tin, Voltammetry.

Abstract

The paper describes the determination of tin by ASV using modified thick film electrodes. Three different types of electrodes were developed: One modified with a mixture of Nafion and mercury(II)acetate, one modified with diethyldithiocarbamate (DDC) or pyrrolidinedithio-carbamate (PDC) and mercury(II)acetate, and one modified with calomel. The analyte was accumulated on the electrode surface after special electrochemical pretreatment of the modified electrode. After recording the voltammogram the electrodes were electrochemically regenerated. By virtue of their lifetime and their measurement reproducibility, we preferred the DDC and PDC modified electrodes. They can be used for months without changing their chemical characteristics. The linear range for tin determination with these electrodes is between 1 and 100 μg/L; the detection limit was calculated as 0.9 μg/L. The electrodes were applied to the direct determination of tin in different canned fruit juices without special sample pretreatment.

Affiliations:

Allemagne, Russie

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Le document en format XML

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<front><div type="abstract" xml:lang="en">The paper describes the determination of tin by ASV using modified thick film electrodes. Three different types of electrodes were developed: One modified with a mixture of Nafion and mercury(II)acetate, one modified with diethyldithiocarbamate (DDC) or pyrrolidinedithio-carbamate (PDC) and mercury(II)acetate, and one modified with calomel. The analyte was accumulated on the electrode surface after special electrochemical pretreatment of the modified electrode. After recording the voltammogram the electrodes were electrochemically regenerated. By virtue of their lifetime and their measurement reproducibility, we preferred the DDC and PDC modified electrodes. They can be used for months without changing their chemical characteristics. The linear range for tin determination with these electrodes is between 1 and 100 μg/L; the detection limit was calculated as 0.9 μg/L. The electrodes were applied to the direct determination of tin in different canned fruit juices without special sample pretreatment.</div>
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Modified solid electrodes for stripping voltammetric determination of tin

Modified solid electrodes for stripping voltammetric determination of tin

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri