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Titolo:
All-solid-state potentiometric sensors sensitive to nonionic surfactants based on ionophores containing ethoxylate units
Autore:
Martinez-Barrachina, S; Alonso, J; Matia, L; Prats, R; del Valle, M;
Indirizzi:
Autonomous Univ Barcelona, Dept Chem, Sensors & Biosensors Grp, Barcelona 08193, Catalonia, Spain Autonomous Univ Barcelona Barcelona Catalonia Spain 08193 atalonia, Spain Soc Gen Aigues Barcelona, Grp AGBAR, Barcelona, Spain Soc Gen Aigues Barcelona Barcelona Spain a, Grp AGBAR, Barcelona, Spain
Titolo Testata:
TALANTA
fascicolo: 5, volume: 54, anno: 2001,
pagine: 811 - 820
SICI:
0039-9140(20010621)54:5<811:APSSTN>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION-SELECTIVE ELECTRODES; ANIONIC SURFACTANTS; BARIUM; TITRATIONS; MEMBRANE; COMPLEX;
Keywords:
all-solid-state ion-selective electrode; plasticized PVC-membrane; nonionic surfactants; alkylphenol polyethoxylates;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: del Valle, M Autonomous Univ Barcelona, Dept Chem, Sensors & Biosensors Grp, Barcelona 08193, Catalonia, Spain Autonomous Univ Barcelona Barcelona Catalonia Spain 08193 in
Citazione:
S. Martinez-Barrachina et al., "All-solid-state potentiometric sensors sensitive to nonionic surfactants based on ionophores containing ethoxylate units", TALANTA, 54(5), 2001, pp. 811-820

Abstract

Earlier work of potentiometric Ion-selective electrodes (ISEs) sensitive to nonionic surfactants of the polyethoxylate type is further extended. The ISEs constructed were all-solid-state sensors with plasticized PVC membranes. The sensing material was a tetraphenylborate salt of the barium complex with a polyethoxylate nonionic surfactant. As membrane component, the combinations of two polyethoxylates of the nonylphenoxy type, which differed in the number of oxyethylene units (5 or 12), and two different plasticizers, (o-nitrophenyloctyl ether and o-nitrophenylphenyl ether), were tested. The response of these electrodes to different nonionic surfactants and the interference effect of several species has been evaluated. For all the types oftested electrodes, the sensitivities shown were ca. 30.0 mV dec(-1) and the limit of detection, ca. 10(-5) M, when a nonylphenoxyde with 12 oxyethylene units was used as standard. The membrane with the best response characteristics was then applied in potentiometric titrations of this kind of surfactants in the presence of Ba2+ ion and using tetraphenylborate as the titrant. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 09:18:45