Research Article
2-Hydroxy-1-naphthaldehyde-P-hydroxybenzoichydrazone: A New Chromogenic Reagent for the Determination of Thorium(IV) and Uranium(VI)
Table 12
Simultaneous determination of U(VI) and Th(IV) in binary mixtures.
| | Amount taken (μg mL−1) | Amount found* (μg mL−1) (recovery %) | Relative error (%) | | U(VI) | Th(IV) | U(VI) | Th(IV) | U(VI) | Th(IV) |
| | 1.908 | 0.464 | 1.896 (99.4) | 0.460 (99.0) | −0.62 | −0.86 | | 1.908 | 0.928 | 1.900 (99.6) | 0.930 (100.2) | −0.42 |
0.21
| | 1.908 | 1.392 | 1.901 (99.6) | 1.395 (100.2) | −0.36 |
0.26
| | 1.908 | 1.856 | 1.898 (99.4) | 1.855 (99.9) | −0.52 | −0.05 | | 1.908 | 2.320 | 1.910 (100.1) | 2.340 (100.8) |
0.10
|
0.86
| | 1.908 | 4.640 | 1.898 (99.4) | 4.650 (100.2) | −0.52 |
0.21
| | 0.238 | 1.856 | 0.234 (98.3) | 1.854 (99.8) | −1.60 | −0.1 | | 0.476 | 1.856 | 0.468 (98.3) | 1.849 (99.6) | −1.60 | −0.37 | | 0.952 | 1.856 | 0.960 (100.8) | 1.858 (100.1) |
0.84
|
0.10
| | 1.428 | 1.856 | 1.432 (100.3) | 1.848 (99.5) | −0.28 | −0.43 | | 1.908 | 1.856 | 1.860 (97.7) | 1.857 (100.0) | −2.50 |
0.05
| | 2.380 | 1.856 | 2.400 (100.8) | 1.846 (99.4) |
0.84
| −0.53 |
|
|
of four determinations.
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