Naslov
Determination of low levels of cyanide with a silver/silevr sulphide wire electrode

Autori
Jovanović, Vladislava ; Sak-Bosnar, Milan ; Jovanović, Miomir

Izvornik
Analytica Chimica Acta (0003-2670) 196 (1987); 221-227

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
cyanide, silver/silevr sulphide wire electrode, microgram quantities

Sažetak
A silver/silver sulphide electrode is prepared quickly by holding a cleaned silver wire in vapours from molten sulphur. In 1000-10 mg L-1 cyanide solutions, the electrode exhibits a linear E/log c(CN) function which becomes slightly sinusoidal for 10-0.1 mg L-1 cyanide. The average slope is slightly super-Nernstian (120 mV/decade concentration). The applicability of the electrode is demonstrated for the determinations of microgram quantities of water-soluble cyanide from the Prussian blue pigments which are constituents of externally applied cosmetics. The home-made electrode provides results agreeing with those obtained with commerically available electrodes.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA