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Determination of Selenium(IV) by Cathodic Stripping Voltammetry Using a Copper Microelectrode

✍ Scribed by D. SUz̆; S. Blagojević; J. Vidić; M. Erceg; D. Vu c̆ć

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
71 KB
Volume
57
Category
Article
ISSN
0026-265X

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✦ Synopsis

Using a copper microelectrode of Ç5-mm diameter, the concentration of Se(IV) was determined by cathodic stripping voltammetry either from HClO 4 (0.1 M) or from NaClO 4 (0.1 M) supporting electrolytes. The preconcentration time of 15 s was chosen as optimal, and calibration graphs were constructed for the applied concentration interval 5 to 50 mM. Satisfactory reproducibility was obtained, with a standard deviation for 5 mM concentration (n Å 10) of about 4%. ᭧ 1997

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