Coulometric stripping potentiometry for arsenic(III)
β Scribed by Roongroje Ratana-ohpas; Daniel Jagner; Feng Ma
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 196 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1040-0397
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π SIMILAR VOLUMES
Coulometric stripping potentiometry has been used for the quantitative determination of Faradaic reactions on glassy carbon surfaces. Exhaustive cathodic electrolysis in samples (10 L) containing known amounts of Bi III , Cu II , Pb II or Cd II , subsequent stripping of the amalgamated atoms with a
## Abstract The coulometric determination of tripositive arsenic and antimony by electrogenerated iodine in a NaHCO~3~ buffered solution of pH 8 has been described. The end point can be determined visually using starch as an indicator. Quantities of As(III) and Sb(III) down to the microgram level c
Equations of the derivative of time with respect to potential and of its peak potential and the peak half-width are derived for a reversible process in adsorption potentiometry in both stirred and unstirred solutions, when both oxidized and reduced forms #are strongly adsorbed and the Langmuir isoth
Thc theory of a n improved coulometric stripping potcntiometry method, involving automatic determination of the chemical current for each sample, and thus suitable for calibration-free determination of trace elements in microliter samples is described. The method has been applied to the determinatio