Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4082
Title: Fabrication of novel coated pyrolytic graphite electrodes for the selective nano-level monitoring of Cd2+ ions in biological and environmental samples using polymeric membrane of newly synthesized macrocycle
Authors: Sahani M.K.
Singh A.K.
Jain A.K.
Upadhyay A.
Kumar A.
Singh U.P.
Narang S.
Published in: Analytica Chimica Acta
Abstract: Novel 5-amino-1,3,4-thiadiazole-2-thiol unit based macrocyclic ionophore 5,11,17-trithia-1,3,7,9,13,15,19,20,21-nonaazatetracyclo[14.2.1.14,7.110,13]henicosa-4(20),10(21),16(19)-triene-6,12,18-trithione (M1), was synthesized and characterized. Preliminary studies on M1 have showed that it has more the affinity toward Cd2+ ion. Thus, the macrocyclic ionophore (M1) was used as electroactive material in the fabrication of PVC-membrane electrodes such as polymeric membrane electrode (PME), coated graphite electrode (CGE) and coated pyrolytic graphite electrode (CPGE) were prepared and its performance characteristic were compared with. The electroanalytical studies performed on PME, CGE and CPGE revealed that CPGE having membrane composition M1:PVC:1-CN:NaTPB in the ratio of 7:37:54:2 exhibits the best potentiometric characteristics in terms of detection limit of 7.58×10-9molL-1, Nernstian slope of 29.6mVdecade-1 of activity. The sensor was found to be independent of pH in the range 2.5-8.5. The sensor showed a fast response time of 10s and could be used over a period of 4 months without any significant divergence in its potentiometric characteristics. The sensor has been employed for monitoring of the Cd2+ ion in real samples and also used as an indicator electrode in the potentiometric titration of Cd2+ ion with EDTA. © 2014.
Citation: Analytica Chimica Acta (2015), 860(): 51-60
URI: https://doi.org/10.1016/j.aca.2014.12.023
http://repository.iitr.ac.in/handle/123456789/4082
Issue Date: 2015
Publisher: Elsevier
Keywords: Cd(II) ion-selective sensor
Coated pyrolytic graphite electrode
Macrocycle
Potentiometry
Single crystal X-ray diffraction
ISSN: 32670
Author Scopus IDs: 56037950500
57209223382
7404463053
57206504802
57206266783
57203181883
56168890200
Author Affiliations: Sahani, M.K., Department of Chemistry, Indian Institute of Technology-Roorkee, Rookee, 247667, India
Singh, A.K., Department of Chemistry, Indian Institute of Technology-Roorkee, Rookee, 247667, India
Jain, A.K., Department of Chemistry, Indian Institute of Technology-Roorkee, Rookee, 247667, India
Upadhyay, A., Department of Chemistry, Indian Institute of Technology-Roorkee, Rookee, 247667, India
Kumar, A., Department of Chemistry, Indian Institute of Technology-Roorkee, Rookee, 247667, India
Singh, U.P., Department of Chemistry, Indian Institute of Technology-Roorkee, Rookee, 247667, India
Narang, S., Department of Chemistry, Indian Institute of Technology-Roorkee, Rookee, 247667, India
Funding Details: Mr. Manoj Kumar Sahani is highly thankful to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for providing financial assistance to undertake this work.
Corresponding Author: Singh, A.K.; Department of Chemistry, Indian Institute of Technology-RoorkeeIndia
Appears in Collections:Journal Publications [CY]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.