Coprecipitative Preconcentration and Differential Pulse Cathodic Stripping Voltammetric Determination of Selenium (IV)
作者:
T.Prasada Rao,
M. Anbu,
M.L.P. Reddy,
C.S.P. Iyer,
A.D. Damodaran,
期刊:
Analytical Letters
(Taylor Available online 1996)
卷期:
Volume 29,
issue 14
页码: 2563-2571
ISSN:0003-2719
年代: 1996
DOI:10.1080/00032719608002792
出版商: Taylor & Francis Group
关键词: Coprecipitation;Selenium determination;differential pulse cathodic stripping voltammetry
数据来源: Taylor
摘要:
A DPCSV procedure for the determination of selenium (IV) with a prior preconcentrative coprecipitation on iron (III) hydroxide has been developed. The experimental conditions for coprecipitation of selenium (IV) onto iron (III) hydroxide, viz. pH, iron (III) concentration, volume of aqueous phase and selenium concentration, were optimized. The coprecipitated selenium (IV) is dissolved in 10 ml of 0.1 M HCl and analysed using DPCSV in the presence of copper (II). Selenium concentrations as low as 10–100 ng present in 500 ml of the aqueous phase could be determined. The method is precise and has been applied to the analysis of sea water and reference material samples.
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