Amperometric determination of sulfide at a pre-oxidised nickel electrode in acidic media.
The electrochemical response of a pre-oxidised nickel electrode to increasing additions of sulfide has been examined and shown to produce a stripping-like voltammetric wave. A mechanism is described based on the formation of nickel sulfide at the electrode surface from a non-electroactive nickel oxi...
| Hlavní autoři: | , , , , |
|---|---|
| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
2003
|
| Shrnutí: | The electrochemical response of a pre-oxidised nickel electrode to increasing additions of sulfide has been examined and shown to produce a stripping-like voltammetric wave. A mechanism is described based on the formation of nickel sulfide at the electrode surface from a non-electroactive nickel oxide layer. The analytical utility of the approach has been examined and a linear range from 1 to 140 microM and a limit of detection of 0.8 microM is achievable, depending on the accumulation time. |
|---|