Sensor for SilverI Ion Based on Schiff-base-p-tertbutylcalix4areneReport as inadecuate

Sensor for SilverI Ion Based on Schiff-base-p-tertbutylcalix4arene - Download this document for free, or read online. Document in PDF available to download.

Department of chemistry, Guru Nanak Dev University, Amritsar 143005, India


Author to whom correspondence should be addressed.

Abstract The preparation of polymer membrane selective to silver ion and its application to ion-selective electrode is reported here. PVC membrane contain silver-selective calix4arene derivative as ionophore. The membrane electrode is highly selective to silver ion and exhibit good linear response over a wide concentration range of 1.0×10-1 to 1.0×10-5M AgNO3 with Nernstian slope of 58.9 mV per decade. The detection limit of electrode is 6.31×10-6 M .The calix4arene based membrane electrode exhibit enhanced selectivities for silver ion over other cations; log KPotAg,Na = -2.35, log KPotAg,K= -2.65, log KPotAg,Mg = -4.57, log KPotAg,Ba = -4.10, log KPotAg,Cd = -3.42, log KPotAg,Pb = -3.45.Even the strongest interferent Hg2+ do not interfere to great extent, log KPotAg,Hg = -2.0.The electrode response is stable over wide pH range of 1.0-6.0. The response time of the sensor is 30 seconds and the membrane can be used for more than 6 months without observing any divergence. The sensor can also be applied as an indicator electrode for potentiometric titration of Ag+ ions with Cl-. It is possible to determine AgI in the natural water spiked with silver with this electrode assembly. View Full-Text

Keywords: Sensor; SilverI; Potentiometry Sensor; SilverI; Potentiometry

Author: R. K. Mahajan * , Inderpreet Kaur, V. Sharma and M. Kumar



Related documents