Polarographic studies on tributyltin oxide in dichloromethane and tetrahydrofuran with application to antifouling paint
✍ Scribed by A.M. Bond; N.M. McLachlan
- Book ID
- 104100614
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 606 KB
- Volume
- 204
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
In the presence of tributyltin oxide, (Bu,Sn),O, an oxidation process is observed at mercury electrodes in non-aqueous solvents. On the polarographic time-scale, the oxidation involves the mercury electrode and is believed to occur according to the following reaction scheme: 2Bu,SnOSnBu, + 2Hg6 [ BusSnHgSnBu,] *+ + Hg( OSnBus) 2 + 2e-Hg( OSnBu,) 2 + 2Hge [ BuSnHgSnBu,] *+ + 2HgO + 2eto give the overall process Bu3SnOSnBu3 + 2Hg6 [ BusSnHgSnBu,] '+ + HgO + 2e-. On the time scale of controlled-potential electrolysis, [ BusSnHgSnBu,] *+ is unstable and additional electron transfer occurs. The oxidation process forms the basis of a specific high-performance liquid chromatographic method for the determination of tributyltin oxide in antifouling paint. A static mercury drop electrode in the hanging drop mode is used as an amperometric detector in a flow-cell configuration.