Application of ASV for Trace Metal Speciation III. Simulated and Experimental N eopolarograms Using Rotated Disk Electrodes

The digital simulation procedure for neopolarograms using rotated disk electrode is described and the properties of reversible. and nonreversible neopolarograms are discussed. The results are compared with experimental neopolarograms of lead in perchlorate medium. The theory of neopolarography using thin mercury film electrodes is developed

Application of ASV for Trace Metal Speciation II. Digital Simulation of Neopolarogram Using Hanging-mercury-drop Electrode

A program for the digital simulation of neopolarography is described and the results of neopolarograms using hanging mercury drop electrodes are discussed

Application of ASV for Trace Metal Speciation IV. Determination of Lead-Chloride Stability Constants by Rotating Mercury Coated Glassy Carbon Electrode

The stability constants of lead-chloride complexes were determined by the neopolarographic method using rotating mercury coated glassy-carbon electrode. The results were compared with the literature and discussed

A Device for a Vibrating Dropping Mercury Electrode

A new device for a vibrating dropping mercury electrode is described. The applicability of the new electrode for the measurements of polarographic waves in the presence of a surface blocking substances is reported. The possibilities of the VDME for the speciation of certain metal ions in multiligand systems are discussed·

A Device for a Vibrating Dropping Mercury Electrode

A new device for a vibrating dropping mercury electrode is described. The applicability of the new electrode for the measurements of polarographic waves in the presence of a surface blocking substances is reported. The possibilities of the VDME for the speciation of certain metal ions in multiligand systems are discussed·

Analiza bronce voltametrijom mikrokristala i tankoslojnom kromatografijom

Corrosion potentials of five samples of bronzes having different compositions and the stripping peak potentials of their main components were determined by abrasive stripping voltammetry. Using thin-layer chromatography in combination with electrochemical dissolution of bronzes in the two electrode sampler, the ions of tin, copper, lead and nickel were detected as the products of electro-oxidation of bronzes. It is shown that the dissolution of tin is preferential at low potential differences between the electrodes in the sampler, while the electro-oxidation of copper is significant only at a potential difference higher than 8 V.Određeni su korozijski potencijali pet uzoraka bronci različitoga sastava i potencijali oksidacije njihovih glavnih sastojaka. Kromatografskom je analizom dokazano da su produkti elektrokemijske oksidacije bronce ioni kositra, bakra, olova i nikla. Pokazano je da se kod malog napona u dvoelektrodnoj elektrokemijskoj ćeliji pretežito oksidira kositar, dok se bakar znatnije oksidira tek kod napona većih od 8 V