✦ LIBER ✦

Determination of Se(IV) in On-Line System by Cathodic Stripping Voltammetry

✍ Scribed by Mieczyslaw Korolczuk; Malgorzata Grabarczyk

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 155 KB
Volume: 15
Category: Article
ISSN: 1040-0397
DOI: 10.1002/elan.200390101

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✦ Synopsis

Abstract

A sensitive and selective on‐line voltammetric procedure for determination of traces of Se(IV) is presented. The pulsed potential accumulation was proposed for minimization of interferences of surface active substances and foreign ions. The calibration plot was linear from 1×10^−9^ mol L^−1^ to 4×10^−8^ mol L^−1^ for accumulation time of 180 s. The relative standard deviation was 6.1% (n=5) for a Se(IV) concentration of 1×10^−8^ mol L^−1^. The detection limit estimated from (3 σ) for an accumulation time of 180 s was about 4×10^−10^ mol L^−1^. The validation of the procedure proposed was made by a recovery tests for tap and river water samples.

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