✦ LIBER ✦

Design and construction of a flow system for determination of Cu(II) ions in water by means of a chemically modified carbon paste electrode

✍ Scribed by A. Safavi; M. Pakniat; N. Maleki

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 571 KB
Volume: 335
Category: Article
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(96)00369-8

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✦ Synopsis

Coppe.r(II) preconcentration was studied by means of a carbon paste electrode modified with 1,2-bismethyl(2aminocyclopentene-carbodithioate)ethane.

A flow system was designed and constructed for reproducible preconcentration and subsequent determination of Cu(I1) (52x 10P4M) accumulated by differential pulse polarography. Effects of different parameters on the peak area were studied. Rapid and convenient acid renewal allows use of a single modified electrode in multiple analytical determinations. For six accumulation/measurement/renewal cycles, relative standard deviation was 2.9%. As little as 1.4x 10m6 M Cu(I1) in water can be determined (4 min preconcentration time). The performance of the electrode is free from most potential interferers.

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