Naslov
Copper(II)-selective electrode based on S, S´-bis(2-aminophenyl)ethanebis(thioate) as carrier

Autori
Buzuk, Marijo ; Brinić, Slobodan ; Caktaš, Filipa ; Bralić, Marija

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
5th International Conference on Instrumental Methods of Analysis Modern Trends and Applications 2007 (IMA)

Mjesto i datum
Patras, Grčka, 30.09.2007. - 04.10.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
ion-selective; potentiometry; copper (II); ionophore

Sažetak
A novel polymeric membrane ISE based on S, S`- bis(2-aminophenyl)oxalate (H2L) as new ionophores and sodium tetraphenylborate (NaTBP) as an anionic excluder in the plasticized PVC membranes for determination of copper (II) is described. The electrode exhibits a slope of 29.5 mV per decade in a linear range 8 × 10-5- 8 × 10-3 M for Cu2+ ion, with detection limit of 4 × 10-5 M. Sensor can be used in pH range of 4-8. The potentiometric selectivity coefficient value ( ) as determinated by fixed interference method indicate excellent selectivity for Cu2+ ions over interfering cations. Influence of, different component ratio, and different plasticizer were study for obtaining a sensor with optimal response characteristic for determination of copper(II) in water sample in wide pH range.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA