NISCAIR Online Periodicals Repository

Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.14 [2007] >
IJCT Vol.14(5) [September 2007] >

Title: Synthesis of chloride ion-selective potentiometric sensor based on coordination polymer complex
Authors: Sundaram, R
Hariprasad, K S
Keywords: Coordination polymers
Electrical conductance measurement
Issue Date: Sep-2007
Publisher: CSIR
IPC CodeC08B1/00
Abstract: This paper describes the fabrication of an ion-selective electrode in which a 2,5-dihydroxy-p-benzoquinone (DHBQ) is used as the ionophore. The polymers prepared were characterized by elemental analyses, FT-infrared spectra, solid state electrical conductivity studies leading to activation energy, conductance measurements and thermoelectric power measurements. The DC conductance (1/R) values of Fe(III)-DHBQ, Co(II)-DHBQ, Ni(II)-DHBQ and Cu(II)-DHBQ are 8.75x10⁻⁸, 11.8x10⁻⁸, 8.33x10⁻⁸ and 1.28x10⁻⁸ Ω⁻¹, respectively. The current increase exponentially against temperature proves the semiconductive nature. Thermoelectric power (TEP) measurements showed the sign of the seebeck coefficient which was positive in the temperature range and hence it was concluded that the majority carriers are of n-type. The low activation energy is interpreted in terms of intermediate trap levels. The main advantage of the electrode is that it is mechanically stable up to 3 years. The electrode shows a linear response in the range of 2.5 x 10⁻⁵ – 0.5 x 10⁻¹ mol dm⁻³. The response time of the electrode is 30 s. The pH range at which the electrode works is 3.8 to 6.8. The electrode was found to be selective towards chloride ion in the presence of ions like Na⁺, Ca²⁺, Mn²⁺, Fe³⁺, Co²⁺, Cu²⁺, Zn²⁺, CH₃COO⁻, NO₃⁻, SO₄²⁻, Br⁻ and NO₂⁻.
Page(s): 451-458
ISSN: 0971–457X
Source:IJCT Vol.14(5) [September 2007]

Files in This Item:

File Description SizeFormat
IJCT 14(5) (2007) 451-458.pdf283.33 kBAdobe PDFView/Open
 Current Page Visits: 104 
Recommend this item


Online Submission of Articles |  NISCAIR Website |  National Knowledge Resources Consortium |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2015 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 163336 since 01-Sep-2015  Last updated on 21-Jun-2016Webmaster: