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Titolo:
Use of self-plasticizing EVA membrane for potentiometric anion detection
Autore:
Torres, KYC; Garcia, CAB; Fernandes, JCB; Neto, GD; Kuboto, LT;
Indirizzi:
Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil Univ Estadual Campinas Campinas SP Brazil BR-13083970 BCpinas, SP, Brazil UFS, Dept Quim, BR-49100000 Sao Cristovao, SE, Brazil UFS Sao Cristovao SE Brazil BR-49100000 BC00000 Sao Cristovao, SE, Brazil Univ Sao Francisco, Ctr Ciencias Biol & Saude, BR-12900000 Braganca Paulista, SP, Brazil Univ Sao Francisco Braganca Paulista SP Brazil BR-12900000 BC, SP, Brazil
Titolo Testata:
TALANTA
fascicolo: 4, volume: 53, anno: 2001,
pagine: 807 - 814
SICI:
0039-9140(20010105)53:4<807:UOSEMF>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION-SELECTIVE ELECTRODES; ETHYLENE-VINYL-ACETATE; ACETYLSALICYLIC-ACID; MATRIX; SYSTEM;
Keywords:
anion-selective electrode; EVA; self-plasticizing; iodide determination;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Kuboto, LT Univ Estadual Campinas, Inst Quim, PO 6154, BR-13083970 Campinas, SP, Brazil Univ Estadual Campinas PO 6154 Campinas SP Brazil BR-13083970BC
Citazione:
K.Y.C. Torres et al., "Use of self-plasticizing EVA membrane for potentiometric anion detection", TALANTA, 53(4), 2001, pp. 807-814

Abstract

In this work, five different types of membranes were developed responsibleto anion-selective electrodes. The membranes were based on tri-caprylyl-trimethyl-ammonium chloride (Aliquat-336S) supported on poly(ethylene-covinyl-acetate) copolymer (EVA). The sensors were prepared by solubilizing the copolymer with the appropriate exchanger in chloroform, without using of any plasticizers. The ion-selective electrodes prepared using these membranes show the utility for anions determinations in the concentration range between 10(-5) and 10(-1) mol l(-1) in the steady-state. The membrane performancewas also evaluated in FIA system using tubular electrode for salicylate and iodide. In FIA system, the electrode exhibited nernstian response for salicylate in the concentration range of 2.5 x 10(-3) and 1.0 x 10(-1), while for iodide from 5.0 x 10(-4) up to 1.0 x 10(-1) mol l(-1). The systems wereemployed for the salicylate and iodide determination in pharmaceutical samples obtaining a relative deviation of 1.6%,when compared to the reference method. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 22/09/20 alle ore 23:17:02