Table 3 Effect of matrix interferences on the extraction of 1 mg L −1 La(III) on 20 mg SG-N-PhenacylPyrNTf 2 ( N = 3)
Coexisting ions | Concentration (mg L −1) | % Extraction of La(III) |
|---|---|---|
Na+, K+, NH4 + | 7,000 | 97.13 |
Ca2+, Mg2+ | 7,000 | 98.07 |
Cd2+ | 600 | 97.43 |
Co2+ | 600 | 96.04 |
Fe2+ | 600 | 95.57 |
Ni2+ | 600 | 98.30 |
Pb2+ | 600 | 96.36 |
Al3+ | 300 | 98.25 |
Cr3+ | 300 | 97.86 |
Cl−, F−, NO3 − | 4,000 | 98.39 |
CO3 2−, SO4 2− | 3,000 | 97.77 |