Pregled bibliografske jedinice broj: 1162772
Determination of Ferric Cations by Potentiometric Sensors Modified with Different Metal Oxides and Oxyhydroxides Nanoparticles
Determination of Ferric Cations by Potentiometric Sensors Modified with Different Metal Oxides and Oxyhydroxides Nanoparticles // 3rd International Conference on Analytical and Bioanalytical Methods
online;, 2021. (poster, međunarodna recenzija, neobjavljeni rad, znanstveni)
CROSBI ID: 1162772 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Determination of Ferric Cations by Potentiometric
Sensors Modified with
Different Metal Oxides and Oxyhydroxides
Nanoparticles
Autori
Prkić, Ante ; Paut, Andrea ; Mitar, Ivana ; Giljanović, Josipa ; Bošković, Perica ;
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni
Skup
3rd International Conference on Analytical and Bioanalytical Methods
Mjesto i datum
Online;, 18.10.2021. - 20.10.2021
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
potentiometry, ion-selective electrodes, nanoparticles
Sažetak
Ion-selective electrodes represent electrochemical sensor that can determine ion activity in various samples, and often are modified with different kinds of metal nanomaterials. Solid-state ion- selective electrode represented here, are based on FePO4 : Ag2S : PTFE = 1:1:2 with addition of (0, 25-1)% microwave synthesized hematite, magnetite, boehmite or aluminium oxide nanoparticles, characterized with FTIR and SEM with EDS analysis, and investigated in order to establish ideal membrane composition for ferric cations determination. Membrane testing were performed in ferric cation solutions at pH values 1 and 5 and different effects occurred in dependence of percentage and type of nanoparticles in sensor composition. M1 with addition of 0, 25% aluminium oxide nanoparticles showed linear response towards ferric cations in the range from 6, 25·10-4 to 1·10-2 molL-1 with slope of -21, 725 mV per concentration decade and correlation factor R2=0, 9635. Increased share of aluminium oxide nanoparticles in membrane M2 (0, 5%) had a positive effect on the expansion of the linear dynamic range for almost a whole decade (3, 91·10-5-1·10-2 ; slope=-16, 77 ; R2=0, 9608). Iron oxide nanoparticles, magnetite, in 0, 25% share in membrane M3 at pH 1 showed very positive effect on linear dynamic range of ferric cations determination (2, 44·10-6-1·10-2 molL-1 ; slope=-22, 381 ; R2=0, 9853). Hematite in only 0, 25% addition (M4) had the most significant impact on ferric cation determination in range from 1, 2·10-6 to 10-2 with slope of -19, 753 mV per decade, almost identical with theoretical Nernstian slope for trivalent cations and R2=0, 9925. High arithmetic middle of recovery values (102, 8%) in ferric determination in standard solution confirmed wide applicability.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
HRZZ-UIP-2017-05-6282 - Razvoj novih membrana za ionsko-selektivne elektrode s dodatkom nanočestica metala i metalnih oksida (NANOISEM) (Prkić, Ante, HRZZ ) ( CroRIS)
Ustanove:
Kemijsko-tehnološki fakultet, Split,
Prirodoslovno-matematički fakultet, Split
Profili:
Perica Bošković (autor)
Andrea Paut (autor)
Ante Prkić (autor)
Josipa Giljanović (autor)
Ivana Mitar (autor)