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A PVC‐Based Dibenzodiaza‐15‐crown‐4 Membrane Potentiometric Sensor for Ni(II)
Author(s) -
Shamsipur Mojtaba,
Kazemi Sayed Yahya
Publication year - 2000
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200012)12:18<1472::aid-elan1472>3.0.co;2-0
Subject(s) - potentiometric titration , nickel , membrane , ion , metal ions in aqueous solution , electrode , inorganic chemistry , potentiometric sensor , chemistry , detection limit , titration , analytical chemistry (journal) , chromatography , organic chemistry , biochemistry
A new PVC membrane sensor for nickel ions based on dibenzodiaza‐15‐crown‐4 as membrane carrier was prepared. The electrode exhibits a Nernstian response for Ni 2+ ions over a concentration range 7.1×10 –7 –1.2×10 –2 M and a limit of detection of 5.6×10 –7 M (0.03 ppm). It has a response time of about 20 s and can be used for at least two months without any divergence in potential. The proposed sensor revealed good selectivities for Ni 2+ over a wide variety of other metal ions and can be used in the pH range of 3.0–6.0. It was used for direct determination of Ni 2+ in solution and, as an indicator electrode, in potentiometric titration of nickel ions.