A new chromium(III) PVC membrane sensor incorporating p-tertiary-butyl calix[4]arene as ionophore, potassium tetrakis as additive and dibutyl phthalate (DBP) as plasticizer was constructed. The electrode exhibited an excellent potentiometric response over a wide concentration range of 1.0x10(-7)-1.0x10(-1) M with a Nernstian slope of 20 +/- 0.5 mV per decade. The detection limit was 5.0x10(-8) M. The electrode showed a better performance over a pH range of 3.0-8.0, and had a short response time of about <15 s. The electrode was successfully applied to potentiometric titration of Cr (III) with EDTA and for direct determination of chromium(III) in waste water.
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Univ E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, EnglandUniv E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, England
Redshaw, Carl
Homden, Damien
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Univ E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, EnglandUniv E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, England
Homden, Damien
Hughes, David L.
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Univ E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, EnglandUniv E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, England
Hughes, David L.
Wright, Joseph A.
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Univ E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, EnglandUniv E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, England
Wright, Joseph A.
Elsegood, Mark R. J.
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Univ Loughborough, Dept Chem, Loughborough LE11 3TU, Leics, EnglandUniv E Anglia, Sch Chem Sci & Pharm, Energy Mat Lab, Norwich NR4 7TJ, Norfolk, England