TITLE

Co2+-selective membrane electrode based on the Schiff Base NADS

AUTHOR(S)
Mashhadizadeh, Mohammad Hossein; Sheikhshoaie, Iran
PUB. DATE
March 2003
SOURCE
Analytical & Bioanalytical Chemistry;Mar2003, Vol. 375 Issue 5, p708
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A new PVC membrane electrode for cobalt(II) ions based on a recently synthesized Schiff base of 5-((4-nitrophenyl)azo)-N-(2',4'-dimethoxyphenyl)salicylaldimine is reported. The electrode exhibits a Nernstian response for Co2+ ions over a wide concentration range (9.0�10-7�1.0�10-2 M) with a slope of 29(�1). The limit of detection is 8.0�10-7 M. The proposed sensor revealed good selectivities over a wide variety of other cations including hard and soft metals. This electrode could be used in a pH range of 3.5�6.0. It was used as an indicator electrode in potentiometric titrations of cobalt(II) ions and can be used in the direct determination of Co2+ in aqueous solutions.
ACCESSION #
15124496

 

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