Pregled bibliografske jedinice broj: 397670
Extraction and Complex Formation of Niobium(V) with 3-Hydroxy-2-Methyl-1-(4-Tolyl)-4-Pyridone
Extraction and Complex Formation of Niobium(V) with 3-Hydroxy-2-Methyl-1-(4-Tolyl)-4-Pyridone // Talanta, 38 (1991), 12; 1403-1407 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 397670 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Extraction and Complex Formation of Niobium(V) with 3-Hydroxy-2-Methyl-1-(4-Tolyl)-4-Pyridone
Autori
Gojmerac Ivšić, Astrid ; Tamhina, Biserka
Izvornik
Talanta (0039-9140) 38
(1991), 12;
1403-1407
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
extraction; niobium(V); 4-pyridone derivatives; spectrophotometry
Sažetak
The extraction of niobium(V) from aqueous hydrochloric and sulphuric acid solutions with 3-hydroxy-2-methyl-1-(4-tolyl) 4-4pyridone (HY) dissolved in chloroform is described. Niobium(V) can be quantitatively extracted with HY in the form of two different complexes depending on the chloride ion concentration in the aqueous phase. At a low chloride concentration or without chloride in the aqueous phase niobium(V) is extracted with HY in the form Nb(OH)3Y2 and at a hogh chloride concentration as a mixed Nb(OH)3ClY complex. Niobium extraction with HY enables the separation of niobium(V) from zirconium(IV) and hafnium(IV). The formation of a mixed chloro-4-pyridone complex is also applicable for spectrophotometric determination of niobium in the organic phase at the maximum absorption at 350 nm.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Scopus
