Tetrabutylammonium bromide/thenoyltri-fluoroacetone/mibk extraction for aas determination of cobalt, nickel, and manganese in copper ores and concentrates.
An extraction-AAS method of determination of Co, Ni, and Mn in metallurgical copper materials containing considerable amounts ofCu, Fe, Pb, Zn, and Al has been developed. Good selectivity of group separation of Co, Ni, and Mn has been achieved by (a) the use of tetrabutylammonium bromide to improve extractability of HTTA complexes by ion-pair formation, and (b) the masking of major elements with sodium thiosulphate and sulphosalicylic acid. The extracts are stable for at least 3 weeks.
Róźańska
B
B
Department of Analytical Chemistry, Warsaw University of Technology, PL-00-664 Warsaw, Noakowskiego 3, Poland.
Lachowicz
E
E