TITLE

Cu(II) selective sensor based on 5,7,12,14-tetramethyldibenzo[b,i]-1,4,8,11-tetraazacyclotetradecane in PVC matrix

AUTHOR(S)
Gupta, V. K.; Prasad, R.; Kumar, A.
PUB. DATE
May 2003
SOURCE
Journal of Applied Electrochemistry;May2003, Vol. 33 Issue 5, p381
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
5,7,12,14-tetramethyldibenzo[b,i]-1,4,8,11-tetraazacyclotetradecane, Me4Bzo2[14]aneN4. (I) was synthesized and used as an electroactive material for the fabrication of membrane electrode in PVC matrix for the determination of Cu2+. The best performance was given by the membranes of macrocycle (I) with composition 5:3:100:150 (I:NaTPB:DBBP:PVC). The sensor worked well over a concentration range 2.5 × 10-5-1.0 × 10-1 M of Cu2+ with a slope of 30.2 ± 0.3 mV (decade)-1 of Cu2+ activity, a fast response time of 13 ± 2 s and a lifetime of five months. The working pH range of this sensor is 2.6–5.5 and it shows excellent selectivity for Cu2+ over other mono-, di- and trivalent cations. Its performance in partially nonaqueous medium was found to be satisfactory. The sensor can also be used as an indicator electrode in the potentiometric titration of Cu2+ against EDTA and its determination in real samples.
ACCESSION #
16781752

 

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