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Pregled bibliografske jedinice broj: 470881

Časopis

Autori: Brinić, Slobodan; Buzuk, Marijo; Generalić, Eni; Bralić, Marija
Naslov: Improving the response of copper(II) selective PVC membrane electrode by modification of N2S2 donor ligand
Izvornik: Acta chimica Slovenica (1318-0207) 57 (2010); 318-324
Vrsta rada: članak
Ključne riječi: copper(II); PVC membrane; selective electrode; ionophore; 1; 2 di (o aminophenylthio)ethane; 1; 2 di (o salicylaldiminophenylthio)ethane
Sažetak:
S, S' bis(2 aminophenyl)ethanebis(thioate), (APhET), is reported as N2S2 ligand which form chelate with copper of high stability as compared to the other metals. Two modification of APhET, simpler 1, 2 di-(o-aminophenylthio)ethane (DAPhTE), and the complex one 1, 2-di-(o-salicylaldiminophenylthio)ethane (SAPhTE), were examined as the active material for copper(II) ion selective PVC membrane electrodes, and observed results are correlated. The obtained results with DAPhTE based electrodes show that only coordination abilities of ligand are insufficient for preparing the efficient membrane material. On the other hand, the results that are achieved with electrodes based on SAPhTE actuate interaction of ligand with polymer membrane matrix and necessity of ionophore immobilization in membrane. Optimized SAPhTE based membrane electrode has a linear range down to 10-6 molL 1, with slope of 27.0 mV per decade, very rapid response time (under 5 seconds) and detection limit of 5.1×10 7 molL 1. Such electrode is suitable for determination of copper(II) in analytical measurements by direct potentiometry and in potentiometric titrations, within pH between 2 and 7. The electrode is selective for copper(II) ions over a large number of metal ions, with the exception on Hg2+ ion when is present in concentrations above 2×10 5 molL-1.
Projekt / tema: 011-1252970-2254
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Kemija
URL Internet adrese: http://acta.chem-soc.si/57/57-2-318.pdf
URL cjelovitog teksta:
Google Scholar: Improving the response of copper(II) selective PVC membrane electrode by modification of N2S2 donor ligand
Upisao u CROSBI: buzuk@ktf-split.hr (buzuk@ktf-split.hr), 13. Svi. 2010. u 19:18 sati



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