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Title: Poly(vinyl chloride) membrane containing zirconium(IV)selenomolybdate inorganic ion exchanger as dysprosium(III)ion selective electrode
Authors: Gupta, A P
Verma, G L
Agarwal, Himanshu
Issue Date: Aug-2003
Publisher: NISCAIR-CSIR, India
Abstract: Poly(vinyl chloride) supported tetracycline sorbed zirconium(IV) selenomolybdate chelating inorganic exchange membrane has been employed for the determination of dysprosium(III) ion. The membrane electrode shows a Nernstain response for Dy(III) over a wide concentration range (l.0×10-1 M - 5×10-5 M) with a slope of 18.3 mV per decade of concentration. The detection limit is 3.8×10-5 M. The electrode is found to possess adequate stability and specific selectivity for Dy(III) over the other closely trivalent lanthanide metal ions with a response time of ~15 s. The sensor can also be used in partially non-aqueous medium, e.g., acetone/alcohol having 5- 10% (v/v) contents. Its working pH range is 2-9. It is successfully applied for the direct determination of Dy3+ in meta borate rock and as an indicator electrode in potentiometric titrations of dysprosium ion with 2-4 % experimental error.
Page(s): 1910-1913
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.42A(08) [August 2003]

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