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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    TrAC Trends in Analytical Chemistry 12 (1993), S. xiii-xiv 
    ISSN: 0165-9936
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 670-676 
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: 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 pyrrolidinedithiocarbamate (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.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 312 (1982), S. 428-437 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A review is presented on electrochemical and adsorption processes for the preconcentration of inorganic ions and organic compounds by the use of organic reagents forming with the elements to be determined insoluble compounds on the electrode surface or surface-active complexes. Quantitative determinations are based on the electrochemical oxidation or reduction of the concentrate formed on the electrode. The processes examined comprise inverse voltammetry of variable-valence ions and adsorption inverse voltammetry. Examples are given of the use of organic reagents in the inverse voltammetry of antimony, iodine, cobalt, nickel, cerium, aluminium, vanadium and molybdenum.
    Notes: Zusammenfassung Ein Überblick wird gegeben über elektrochemische und Adsorptionsverfahren zur Anreicherung anorganischer Ionen und organischer Verbindungen mit Hilfe organischer Reagentien, die mit den zu bestimmenden Elementen unlösliche Verbindungen auf der Elektrodenoberfläche oder oberflächenaktive Komplexe bilden. Quantitative Messungen beruhen auf der elektrochemischen Oxidation oder Reduktion des an der Elektrode gebildeten Konzentrates. Die behandelten Verfahren umfassen die Inverse Voltammetrie von Ionen variabler Wertigkeit sowie die Inverse Adsorptionsvoltammetrie. Anwendungsbeispiele für die Verwendung organischer Reagentien werden gegeben für Antimon, Iod, Cobalt, Nickel, Cer, Aluminium, Vanadium und Molybdän.
    Type of Medium: Electronic Resource
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