Liquid-Liquid Extraction of Transition Metal Cations by Glyoximes and Their Macrocyclic Glyoxime Ether Derivatives

Table 5

Extraction of metal cations with L4 (%).

Metals	% Extraction
	pH ≅2,00	pH ≅3,00	pH ≅4,00	pH ≅5,00
Ni^+2	59,34 ± 0,83	70,67 ± 1,19	78,19 ± 1,38	67,35 ± 0,97
Co^+2	40,48 ± 0,56	62,62 ± 0,70	69,83 ± 1,03	71,83 ± 1,42
Cu^+2	33,13 ± 0,87	72,55 ± 1,74	79,70 ± 1,50	79,16 ± 1,64
Zn^+2	56,83 ± 0,26	70,53 ± 0,94	73,46 ± 1,06	78,04 ± 1,23
Cd^+2	39,75 ± 0,64	57,99 ± 0,69	70,02 ± 0,87	57,85 ± 0,66
Pb^+2	37,63 ± 0,34	56,14 ± 0,75	56,86 ± 0,81	71,32 ± 0,24
Hg^+2	74,00 ± 0,28	64,46 ± 0,84	35,76 ± 0,55	30,34 ± 0,73