Inorganic Ion-Exchangers as Ion-Sensors

Coetzee, C.J.

doi:10.1016/b978-0-08-029692-0.50006-0

Cited by 12 publications

(1 citation statement)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is generally understood that a very large number of inorganic compounds possess ionexchange characteristics like phosphate, tungstates, titanates, heteropoly acid salts and layered compounds including double hydroxides. Some zirconium 13 based ion exchangers have shown selectivity towards rare earth metal ions. These ion exchangers possess good ion-exchange characteristics and have been identified as electro-active materials.…”

Section: Introductionmentioning

confidence: 99%

Potentiometric Sensor for Gadolinium(III) Ion Based on Zirconium(IV) Tungstophosphate as an Electroactive Material

Sharma¹,

Sharma²

2009

Journal of Chemistry

View full text Add to dashboard Cite

A new inorganic ion exchanger has been synthesized namely Zirconium(IV) tungstophosphate [ZrWP]. The synthesized exchanger was characterized using ion exchange capacity and distribution coefficient (Kd). For further studies, exchanger with 0.35 meq/g ion-exchange capacity was selected. Electrochemical studies were carried out on the ion exchange membranes using epoxy resin as a binder. In case of ZrWP, the membrane having the composition; Zirconium(IV) tugstophosphate (40%) and epoxy resin (60%) exhibits best performance. The membrane works well over a wide range of concentration from 1×10-5to 1×10-1M of Gd(III) ion with an over- Nernstian slope of 30 mv/ decade. The response time of the sensor is 15 seconds. For this membrane, effect of internal solution has been studied and the electrode was successfully used in partially non-aqueous media too. Fixed interference method and matched potential method has been used for determining selectivity coefficient with respect to alkali, alkaline earth, some transition and rare earth metal ions that are normally present along with Gd(III) in its ores. The electrode can be used in the pH range 4.0-10.0 for 10-1M and 3.0-7.0 for 10-2M concentration of target ion. These sensors have been used as indicator electrodes in the potentiometric titration of Gd(III) ion against EDTA and oxalic acid.

show abstract

Section: Introductionmentioning

confidence: 99%

Potentiometric Sensor for Gadolinium(III) Ion Based on Zirconium(IV) Tungstophosphate as an Electroactive Material

Sharma¹,

Sharma²

2009

Journal of Chemistry

View full text Add to dashboard Cite

show abstract

Epoxy Matrix Membrane Potentiometric Sensor Based on Zirconium Titanium Phosphate Ion Exchanger for Flow Injection Analysis of Nitrite

et al. 2000

View full text Add to dashboard Cite

Studies on an araldite‐based membrane of copper hexacyanoferrate (III) as a caesium ion‐sensitive electrode

Jain

Singh

Bala

1984

J. Chem. Tech. Biotechnol.

View full text Add to dashboard Cite

Solid membranes of copper hexacyanoferrate (III) in araldite are evaluated as a caesium ion‐sensitive electrode. The electrode can be used for caesium determination in the concentration range of 10−1 to 10‐4M. The potentials generated across the membrane are reproducible and steady potentials are attained in about 1 to 2min. The same electrode can be used over a period of 6 months without significant change in potential. The electrode can be used in the pH ranges 2.5–6.0 at 10−2 M Cs+ and 3.0–6.0 at 10−3 M CS+, and in presence of a number of interfering ions. Potentiometric titration of caesium nitrate with 12‐moIybdophosphoric acid was also carried out using the membrane as an end point indicator.

show abstract

Inorganic Ion-Exchangers as Ion-Sensors

Cited by 12 publications

References 42 publications

Potentiometric Sensor for Gadolinium(III) Ion Based on Zirconium(IV) Tungstophosphate as an Electroactive Material

Potentiometric Sensor for Gadolinium(III) Ion Based on Zirconium(IV) Tungstophosphate as an Electroactive Material

Epoxy Matrix Membrane Potentiometric Sensor Based on Zirconium Titanium Phosphate Ion Exchanger for Flow Injection Analysis of Nitrite

Studies on an araldite‐based membrane of copper hexacyanoferrate (III) as a caesium ion‐sensitive electrode

Contact Info

Product

Resources

About