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Titolo:
Effect of dodecyl alcohol on the potentiometric response of an isopropyl xanthate ion-selective electrode
Autore:
Cabrera, WJ; Maldonado, ES; Rios, HE;
Indirizzi:
Univ Chile, Fac Ciencias, Dept Quim, Santiago, Chile Univ Chile SantiagoChile ile, Fac Ciencias, Dept Quim, Santiago, Chile Univ Arturo Prat, Dept Quim, Iquique, Chile Univ Arturo Prat Iquique Chile v Arturo Prat, Dept Quim, Iquique, Chile
Titolo Testata:
JOURNAL OF COLLOID AND INTERFACE SCIENCE
fascicolo: 1, volume: 237, anno: 2001,
pagine: 76 - 79
SICI:
0021-9797(20010501)237:1<76:EODAOT>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Keywords:
xanthates; ion-selective electrode; plasticizers; membrane polarity; interfering agents;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Rios, HE Univ Chile, Fac Ciencias, Dept Quim, Casilla 653,Correo Cent, Santiago, Chile Univ Chile Casilla 653,Correo Cent Santiago Chile ntiago, Chile
Citazione:
W.J. Cabrera et al., "Effect of dodecyl alcohol on the potentiometric response of an isopropyl xanthate ion-selective electrode", J COLL I SC, 237(1), 2001, pp. 76-79

Abstract

An isopropyl xanthate ion-selective electrode was constructed using as a carrier the complex trioctylmethylammonium-isopropyl xanthate. Two kinds of plastic membranes were built, with dioctyl phthalate (DOA) and dioctyl adipate as plasticizers. In both cases, the electrical responses were linear ina wide range of xanthate concentrations, with the limit of detection between 10(-4) and 10(-5) M. The electrical response was improved by adding only3 mu mol of dodecyl alcohol per membrane. This fact seems to indicate not only that the fluidity is relevant but also that the surface polarity of the plastic membrane plays an important role. The analysis of some added salts shows that isobutyl xanthate is a strong interfering agent for the DOA electrode. Nitrate interferes weakly, whereas chloride, acetate, and carbonate do not affect the electrical response of both kinds of electrodes. (C) 2001 Academic Press.

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Documento generato il 01/10/20 alle ore 15:38:07