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• W1927118738 endingPage "1347" @default.
• W1927118738 startingPage "1341" @default.
• W1927118738 abstract "Traces of sulfide ion produce a cathodic peak on the HMDE at about −1.50 V (vs. SCE) after preconcentration at −0.5 V in the borax buffer containing 0.01 mM CoII. This peak is due to the catalytic hydrogen evolution, as demonstrated by the influence of the buffer concentration, the effect of water substitution by deuterium oxide and by the formation of hydrogen bubbles on the electrode. The effect of sulfide ion concentration, deposition time and deposition potential demonstrate that a positively charged cobalt complex is adsorptively accumulated during the deposition step. The reduction of CoII in this species produces a catalytically active compound which is involved in the reduction of the hydrogen ion according to the proposed mechanism. The potential analytical applications of this process for the determination of the sulfide ion have been assessed. The peak current is directly proportional to the concentration of the sulfide ion enabling the application of the standard addition method. The detection limit (using either normal or derivative LSV) is about 1 nM for 10 min accumulation time. The accuracy and reproducibility are fairly good and some of the common interferences in CSV of sulfide ion are removed or at least diminished." @default.
• W1927118738 created "2016-06-24" @default.
• W1927118738 creator A5022300586 @default.
• W1927118738 creator A5032176403 @default.
• W1927118738 creator A5063252989 @default.
• W1927118738 date "1997-11-01" @default.
• W1927118738 modified "2023-10-18" @default.
• W1927118738 title "Catalytic hydrogen evolution in the presence of sulfide and cobalt ions. A study by cathodic stripping voltammetry on the hanging mercury drop electrode" @default.
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• W1927118738 doi "https://doi.org/10.1002/elan.1140091708" @default.
• W1927118738 hasPublicationYear "1997" @default.
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