Naslov
A NOVEL POTENTIOMETRIC SENSORS OF CHLORIDE BY USING „HOME MADE” Ag2S/AgCl ION-SELECTIVE ELECTRODE ENRICHED WITH FexOy NANOPARTICLES

Autori
Vukušić, Tina ; Prkić, Ante ; Mitar, Ivana ; Giljanović, Josipa ; Sokol, Vesna ; Bošković, Perica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
25. Young Investigators´ Seminar on Analytical Chemistry

Mjesto i datum
Graz, Austrija, 02.07.2018. - 04.07.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ion selective electrode, chloride, potentiometry, nanoparticles, PTFE

Sažetak
Lately, application of various nanoparticles (e.g. Ag, ZnO, CdO, graphene etc.) become very popular because of improvement of membranes used in electroanalytical sensors. [1, 2] It was described a development and testing of new potentiometric sensors for ion-selective electrodes based on membrane made of PTFE:Ag2S/AgCl = 2:1:1 by adding FexOy nanoparticles. Nanoparticles weight ratio were 0.1-1.0 %. Testing were performed in perchloric acid (pH = 0, 1 and 2). Membranes were built-in a “home made” electrode body. All membranes were tested to response of chloride and silver ions. All tested membranes had a linear response range to chloride in concentration range 5.0×10−6-1.00×10−1 mol L−1. The best ones (M78 and M86) showed linear response range 1.90×10−6-1.00×10−1 mol L−1 and 7.00×10−6-1.00×10−1 mol L−1, respectively. Limits of detection were 1.4×10−6 mol L−1 and 4.0×10−6 mol L−1, respectively. It was noticed significant loss of response to silver ions below concentration of 1×10−3 mol L−1. Scanning electron microscopy of, both surface in contact to solution and cross-section, analyzed tested membranes shown that all nanoparticles were by membrane surfaces.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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