The interaction of factor Va with phospholipid monolayers was studied using alternating current polarography. For these studies a hanging mercury drop electrode is positioned in contact with the monolayer at the air-monolayer interface. Factor Va introduced into the aqueous subphase beneath the monolayer caused alterations in the capacitance of the circuit. When factor Va was introduced beneath...

The reduction of the Cd(2,2,2)2+ complex has been studied in acetonitrile using polarography, chronocoulometry, and cyclic voltammetry. The corresponding kinetic parameters have been calculated and are compared with those obtained for the solvated cadmium cation in the same solvent. The study of the eiectrochemical reduction mechanism showed that the final stable products are the free ligand (2...

Electro-active elemental sulphur dissolved in hydrazine hydrate solvent was studied by d.c. polarography, cyclic voltammetry and millicoulometry in sodium acetate, ammonium tartrate and sodium phosphate buffers in an aqueous medium. The method, which uses a mercury electrode, is highly sensitive with less interference than other polarographic methods. The method was extended to the determinatio...

Electrochemical studies on complexes of copper(II) with Warfarin sodium have been carried out by direct current polarography. Using D.M.E. electrode the comparative investigation on the electroreduction of copper(II) with Warfarin sodium in 1M KNO3 containing 30% and 40% ethanol have been made. The voltammetric data were evaluated according to Deford and Hume's method. The reduction was reversi...

An equation for stripping polarographyis derived,relating the half-wave potential (E:ll), ligand concentration, and dissociation constant of a complexed metal ion. This equation is similar to that for classical polarography, but contains an additional term which makes Ezz a linear function of the logarithm of the time. A computer-assisted system for generating stripping polarographic curves is ...

The heavy metals Cd, Pb, Zn, Ni and Mo were determined in 27 samples of medicinal herbs taken from various places in Bielsko Biata and the neighbouring area. Samples were digested by the wet method in a microwave oven. Flame AAS and differential pulse polarography (anodic and stripping voltammetry) were used for determination of these metals. Oriental tobacco (CTA-ATL-1) as the certified refere...