Anodic stripping potentiometric determination of antimony on a combined electrode
| Autor: | S.B. Adeloju, Graeme E. Batley, Daniel Jagner, Toni M. Young |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Detection limit
Electrolysis Supporting electrolyte Inorganic chemistry Potentiometric titration chemistry.chemical_element Glassy carbon Biochemistry Analytical Chemistry law.invention Anodic stripping voltammetry Antimony chemistry law Electrochemistry Electroanalytical method Environmental Chemistry Spectroscopy |
| Zdroj: | The Analyst. 123:1871-1874 |
| ISSN: | 1364-5528 0003-2654 |
| DOI: | 10.1039/a803408g |
| Popis: | The anodic stripping potentiometric (ASP) determination of antimony on a combined working–auxiliary–reference electrode system is described. The method utilises 3 M HCl as supporting electrolyte and a combined glassy carbon mercury film electrode at an electrolysis potential of –400 mV versus Ag–AgCl (1 M HCl) for the reliable determination of ultratrace concentrations of antimony. A detection limit of 0.3 µg l–1 and a linear concentration range of 0.3–150 µg/l–1 antimony were accomplished under these conditions with an electrolysis time of 10 min. The use of L-cysteine was effective for the reduction of SbV to SbIII and its subsequent use for the ASP determination of the metalloid. The method was successfully applied to the determination of trace and ultratrace concentrations of antimony in water and orchard leaves samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|