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| Samples | Impurities | Mass weight (%) ICP-MS | Mass weight (%) weight difference experiment |
|---|---|---|---|
| 1.5MHNO | WO3·0.33H2O | 41.09 | 39.75 |
| 1.25MHNO | WO3·0.33H2O | 14.27 | — |
| 1MHNO | WO3·0.33H2O | 9.90 | — |
| 0.5MHNO | WO3·0.33H2O | 5.99 | — |
| 0.97BWO | WO3·0.33H2O/BiONO3 | 1.99/3.58 | —/3.63 |
| 2.99BWO | BiONO3 | 3.52 | — |
| 4.99BWO | BiONO3 | 2.75 | — |
| 7.01BWO | BiONO3 | 2.80 | — |
| 9.01BWO | Bi2O3 | 1.50 | — |
| 10.00BWO | Bi2O3 | 2.03 | — |
| 11.05BWO | Bi2O3 | 4.90 | — |
| 12.98BWO | Bi2O3 | 18.88 | 21.26 |
| 0.5MNAOH | Bi2O3 | 102.90 | 100.00 |
