Table 1 Extraction efficiencies for different metals using BPHA (5 min contact time) and dithizone (1 min contact time) from 2 M Zn(NO3)2 in 0.01 M HNO3. Fe(III), Cu, Mn, Co and Ni ions were added to the Zn(NO3)2 solution at concentrations of 0.1 mM. The reported uncertainty is given as one standard deviation of the mean (n = 3)
| Â | Zn [%] | Ga [%] | Fe [%] | Cu [%] | Mn [%] | Co [%] | Ni [%] |
|---|---|---|---|---|---|---|---|
BPHA | 0.09 ± 0.06 | 99.6 ± 0.3 | 99.45 ± 0.03 | 99.3 ± 0.4 | 0.8 ± 0.3 | 4.1 ± 1.6 | 1.9 ± 1.2 |
Dithizone | 0.31 ± 0.19 | 0.03 ± 0.02 | 9.3 ± 3.0 | 99.91 ± 0.06 | 3.3 ± 2.3 | 5.1 ± 1.5 | 7.3 ± 1.9 |