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The Synthesis of a New Thiophene‐Derivative Schiff's Base and Its Use in Preparation of Copper‐Ion Selective Electrodes
Author(s) -
Poursaberi Tahereh,
HajiaghaBabaei Leila,
Yousefi Mohammad,
Rouhani Shohreh,
Shamsipur Mojtaba,
KargarRazi Maryam,
Moghimi Abolghasem,
Aghabozorg Hossein,
Ganjali Mohammad Reza
Publication year - 2001
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(200112)13:18<1513::aid-elan1513>3.0.co;2-x
Subject(s) - potentiometric titration , copper , electrode , detection limit , schiff base , ion selective electrode , inorganic chemistry , chemistry , thiophene , selectivity , titration , ion , chromatography , organic chemistry , polymer chemistry , catalysis
A highly selective and sensitive PVC‐membrane electrode for Cu(II) ion was developed by using a new thiophene‐derivative Schiff's base. The electrode exhibits a Nernstian slope of 29.3±0.7 mV per decade at 25 °C over a very wide concentration range (1.0×10 −1 –6.0×10 −8 M) with a detection limit of 2.0×10 −8 M (1.28 ng/mL). The ion selectivity of this electrode for Cu 2+ was greater than 3.0×10 3 times over various metal ions. It was successfully applied to the determination of trace amounts of copper in Iranian black tea, and as indicator electrode, in potentiometric titration of copper ion.