COBALT PHTHALOCYANINE DERIVATIVES AS NEUTRAL CARRIERS FOR NITRITE-SENSITIVE POLY(VINYL CHLORIDE) MEMBRANE ELECTRODES

Authors
LI JZ WU XC YUAN R LIN HG YU RQ
Citation
Jz. Li et al., COBALT PHTHALOCYANINE DERIVATIVES AS NEUTRAL CARRIERS FOR NITRITE-SENSITIVE POLY(VINYL CHLORIDE) MEMBRANE ELECTRODES, Analyst, 119(6), 1994, pp. 1363-1366
Citations number
17
Categorie Soggetti
Chemistry Analytical
Journal title
Analyst → ACNP
ISSN journal
00032654
Volume
119
Issue
6
Year of publication
1994
Pages
1363 - 1366
Database
ISI
SICI code
0003-2654(1994)119:6<1363:CPDANC>2.0.ZU;2-3
Abstract
PVC membrane electrodes based on cobalt phthalocyanine and its derivat ives are described. An electrode that exhibits the selectivity sequenc e NO2- > SCN- approximate to I- >> CIO4- > Br- > NO3- > Cl- > OAc- was prepared. The electrodes show a linear response towards nitrite in th e range 6 X 10(-2)-5 X 10(-6) mol dm(-3) with a slope of -52.0 mV deca de(-1) (at 20 degrees C). The electrode has a satisfactory reproducibi lity and a rapid potential response. The UV spectra of the carrier and the a.c. impedance of the membrane were studied.