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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Determination of Mefenamic Acid with Fe(II)-Dipyridyl-Mefenamic Acid Ternary Complex as Ion-exchagner

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2001, v.14 no.1, pp.59-63
Nam, Su Ja
Moon, Hyun Sook
Lee, Mi Na
Jung, Moon Mo
Hur, Moon Hye
Ahn, Moon Kyu
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Abstract

A PVC membrane electrodes based on Fe(II)-dipyridyl-mefenamic acid ternary complex as ion exchanger were prepared using o-nitrophenyl octyl ether as a plasticizer. The 2,2'-dipyridyl, 4,4'-dipyridyl and 4,4'-dipyridyl-2,2'-dipyridyl were used as dipyridyl derivative ligand. The electrode dxhibits a fast stable and linear response for <TEX>$10^{-5}-10^{-3}mol/L$</TEX> mefenamate with an anionic slope of -55.98, -49.47, -59.35mV/decade in pH 8.9 borate buffer solution respectively. Potentiometric selectivity measurements revealed negligible interferences from aromatic and aliphatic carboxylic acid salts.

keywords
dipyridyl, ternary complex, mefenamic acid


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