Journal :   Asian Journal of Research in Chemistry

Volume No. :   5

Issue No. :  3

Year :  2012

Pages :   433-436

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Selective recognition of Cd(II) using 5, 11, 17, 23-Tetra-tert-butyl-25,27-bis(7’-methoxycoumarin-3’-methyloxy)-26, 28-dihydroxycalix[4]arene



Address:   Arpit Singh1, Aishwarya Singh1 and Gyanendra Singh2*
1Department of Chemistry, Mewar University, Chittorgarh, Rajasthan– 312901, India
2Department of Chemistry, M.M.H. College, Ghaziabad (U.P) 201001, India
*Corresponding Author
DOI No:

ABSTRACT:
The work in this study is based on the selective determination of Cd(II) using 5, 11, 17, 23-Tetra-tert-butyl-25, 27-bis(7’-methoxycoumarin-3’-methyloxy)-26, 28-dihydroxycalix[4]arene as neutral ionophore. The anion excluder KTpClPB and various plasticizers, viz., o-NPOE, DBP, DBBP, TEP, DOP, CN and OA have been used to improve the performance of sensor. The best performance was obtained with o-NPOE as plasticizer with composition PVC (33%): o-NOPE (54%): Ionophore (5%): NaTPB (8%). This sensor exhibits Nernstian response with slope 23.0 ± 0.3 mV/ decade of activity in the concentration range 1.0×10-9 to 1.0×10-1 M of Cd(II), performs satisfactorily over wide pH range of ( 2.0-8.6) with a fast response time (10s). The proposed sensor can be used over a period of 10 months without significance drift in potential. It has been used successfully for direct determination of Cd(II) in different real samples.
KEYWORDS:
Ionophore, chromium selective sensor, Calix[4]arene, ion-selective electrodes.
Cite:
Arpit Singh, Aishwarya Singh, Gyanendra Singh. Selective recognition of Cd(II) using 5, 11, 17, 23-Tetra-tert-butyl-25,27-bis(7’-methoxycoumarin-3’-methyloxy)-26, 28-dihydroxycalix[4]arene. Asian J. Research Chem. 5(3): March 2012; Page 433-436.
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