J. Chin. Chem. Soc., Vol. 5.,1,
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J. Chin. Chem. Soc., Vol. 5.,1,. No. .,I,2007. 1. =!",'-'::£s~-. Application. of Tetra Cyclohexyl. Tin(lV) as an Anionic. Carrier for the. Construction. of a New Salicylate Membrane. Sensor. Mohammad Reza Ganjali,'. Par\.iz Norouzi,' Farnoush Faridbod,'.

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J. Chin. Chem. Soc., Vol. 5.,1,

No. .,I,2007

1

=!",'-'::£s~-

Application

of Tetra Cyclohexyl

Tin(lV) as an Anionic

Carrier for the

Construction

of a New Salicylate Membrane

Sensor

Mohammad Reza Ganjali,'. Par\.iz Norouzi,' Farnoush Faridbod,'

Morteza RezapourJ and Abbas Ahmadib

"Center of E_tcellencein Electrochemi.~try,

Faculo. a/Chemistry, Univer.~ity of Tehran, Tehran,fran

bDepartment of Science, School of Chemistry, Islamic Azad Universit}', Karaj Branch, Karaj. Iran

A new tin complex 'namely tetracyclohexyl tin(l\') (TCHT) was synthesized and used as the ion car-

rier for the construction of a highly selective salicylate sensor.This sensor shows a Nemstian response to

salicylate ions over a very wide concentration (1.0 x 10.7-1.0 10.1M) in a pH range of5.5-1 0.5. The opti-

x

mum selectivity and response could be obtained for amembrane incorporating 30% PVC. 61 % BA, 3% of

cationic additive (HTAB) and 6% ofTCHT. 'The responsetime of the electrode is very short in the whole

concentration range (15 s). The electrode also shows an excellent discriminating ability for salicylate ions

with respect to the most common organic and inorganic anions including chloride, sulfat~, nitrate, nitrite,

cyanide, sulfite, iodide, thiocyanate, phosphate, acetate, oxalate, citrate, and tartarate ions. The detection

limit of the proposed sensor is 8.0 x 10.8M. The electrode was successfully used for determining the con-

centration of salicylate ion in synthetic serums.

, I.,;

Key\vords:

Salicylate ion selective electrode;

P\'C membrane; Tetra cyclohexyl tin(IV).


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