Research Article

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

Table 6

Extraction of alkali metal cations with ligands (L1–L4) (%)a.

Ligands% Extraction
Li+Na+K+Cs+

L11,12 ± 0,291,28 ± 0,263,88 ± 0,722,18 ± 0,32
L2<1,00<1,001,37 ± 0,172,10 ± 0,14
L313,79 ± 1,5460,82 ± 2,6831,16 ± 1,0618,76 ± 0,82
L413,68 ± 1,8064,84 ± 3,0223,63 ± 2,0918,09 ± 0,76

H2O/CH2Cl2 = 10/10 (v/v); [picric acid] = 2 × 10−5 M, [ligand] = 1 × 10−3 M, and [metal hydroxide] = 1 × 10−2 M, 298 K, 1 h contact time.
Averages and standard deviations calculated for data are obtained from five independent extraction experiments.