B. Fleet, N. B. Fouzder
Jul 25, 1975
Citations
0
Influential Citations
36
Citations
Journal
Journal of Electroanalytical Chemistry
Abstract
Abstract The electrochemical behaviour of triphenyltin and bis(tri-n-butyltin) oxide (TBTO) in 50% (v/v) ethanol solution has been investigated by various electrochemical techniques including d.c. polarography, cyclic voltammetry and controlled potential coulometry. TBTO undergoes slow hydrolysis producing tributyltin hydroxide. The first electrochemical step involves reduction of tributyltin hydroxide forming a radical which is strongly adsorbed onto the DME giving rise to an adsorption prewave. The radical undergoes further reduction in the second step along with the unhydrolysed TBTO molecules. The products have been found to be adsorbed at the electrode surface. A mechanism of reduction is proposed and a polarographic method has been developed for determining triphenyltin and TBTO down to submicrogram level. The method has been used for determining Fentin residue in formulation samples.