Sensors 2002, 2(10), 417-423; doi:10.3390/s21000417
Article

Sensor for Silver(I) Ion Based on Schiff-base-p-tertbutylcalix[4]arene

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Received: 16 September 2002; Accepted: 1 October 2002 / Published: 18 October 2002
(This article belongs to the Special Issue Ion Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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 calix[4]arene 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 calix[4]arene 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 Ag(I) in the natural water spiked with silver with this electrode assembly.
Keywords: Sensor; Silver(I); Potentiometry
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MDPI and ACS Style

Mahajan, R.K.; Kaur, I.; Sharma, V.; Kumar, M. Sensor for Silver(I) Ion Based on Schiff-base-p-tertbutylcalix[4]arene. Sensors 2002, 2, 417-423.

AMA Style

Mahajan RK, Kaur I, Sharma V, Kumar M. Sensor for Silver(I) Ion Based on Schiff-base-p-tertbutylcalix[4]arene. Sensors. 2002; 2(10):417-423.

Chicago/Turabian Style

Mahajan, R. K.; Kaur, Inderpreet; Sharma, V.; Kumar, M. 2002. "Sensor for Silver(I) Ion Based on Schiff-base-p-tertbutylcalix[4]arene." Sensors 2, no. 10: 417-423.


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