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Reductive potentiomeric stripping analysis of manganese with potassium hexacyanoferrate(II) as reducing agent on a glassy carbon electrode

✍ Scribed by Yali Zhang; Kui Jiao; Chengfan Liu; Xiaobin Liu

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 669 KB
Volume: 282
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(93)80360-w

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✦ Synopsis

The reductive potentiometric stripping analysis (RPSA) of manganese with potassium hexacyanoferrate(I1) as reducing agent on a glassy carbon electrode was investigated. This method is more sensitive, more reproducible, more precise and more convenient than the RPSA method for manganese with hydroquinone as reducing agent on a platinum working electrode. The technique was applied satisfactorily to determine micro amounts of manganese in artificial human hair sample solution and vegetables. The pretreatment of the glassy carbon electrode, the processes of anodic preconcentration and subsequent RPSA and interferences are discussed.

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Reductive potentiometric stripping analysis (RPSA), with potassium ferrocyanide as the reducing agent on a glassy carbon electrode, is applied for the determination of lead over the range 2 x 10-'-5 x M lead for ten consecutive measurements is 2.5%. This technique has been used to determine the minu