Naslov
Solvent Extraction of Ruthenium(III) as a Thiocyanate Complex

Autori
Tamhina, Biserka ; Vojković, Vlasta ; Brajenović, Nataša

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

Izvornik
Book of Abstracts / Charman, Valiente, M - Barcelona : Universitat de Gironaq, Universitat Autonoma de Barcelona, 1999

Skup
Deauville CONFERENCE 98 6th SAS Symposium on Analytical Sciences

Mjesto i datum
Barcelona, Španjolska, 08.07.1999. - 18.07.1999

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ruthenium; Thiocyanate; Extraction; Spectrophotometry; Sufractant

Sažetak
The extraction of ruthenium(III) as a thiocyanate complex from hydrochloric acid solution with tetraphenylarsonium(TPA), tetraphenylphosponium(TPP) and cetylpyridine(CP) shloride and cetyltrimethylammonium(CTMA) bromide dissolved in chloroform was investigated. The optimum conditions for quantittive extraction (over 96%) by all extraction were determined. The extraction described can be used as a very simple method for ruthenium separation and also tof the spectrophotometric determination of ruthenium(III) in the organic phase, wich is more sensitive the aqueous phase. The extraction behaviour of CTMA and CP was found to be more efficacious than that of TPA, because a lower excess of extractant and less shakig time of the axueous and organic phases were required. Distribution and spectrophotometric methods showed that the mechanism of extraction was based on the formation of ion-associated compounds between two onium cations and one ruthenium(III) thiocyanate anion bearing two charges.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA