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- W2068224871 startingPage "2039" @default.
- W2068224871 abstract "Differential pulse voltammetry was used to determine gold in gold-plated electrotechnical components. Samples were dissolved to form tetrachlorourate, which was determined on a carbon paste electrode containing tricresyl phosphate as pasting liquid. A characteristic cathodic peak for tetrachlorourate, whose selective accumulation is based on extraction, is obtained during cathodic scan from +0.8 to -0.5 V vs Ag/AgCl electrode. The accompanying Fe(III) and Cu(II) ions from the matrix are masked by adding EDTA. Gold can be determined in the presence of their thousand-fold excess in the concentration range 1 . 10 -5 - 1 . 10 -7 mol l -1 . The results were confirmed by potentiometric titration with a solution of 1-(ethoxycarbonyl)pentadecyltrimethylammonium bromide (Septonex) by using a coated-wire indicator electrode with a softened plastic membrane." @default.
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- W2068224871 date "1993-01-01" @default.
- W2068224871 modified "2023-09-24" @default.
- W2068224871 title "Voltammetric and Potentiometric Determination of Gold in Gold-Plated Electrotechnical Components" @default.
- W2068224871 doi "https://doi.org/10.1135/cccc19932039" @default.
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