Table 4. Fraction of Cu in the Samples Derived from ICP-OES Analysis.
| Cu elemental
analysis |
||
|---|---|---|
| samples | Cu wt % | the loss of ratios (%) |
| S0 | 21.44 | |
| S2 | 21.16 | 1.31 |
| S4 | 20.95 | 2.29 |
| S6 | 20.90 | 2.52 |
| S8 | 20.24 | 5.60 |
| S10 | 20.23 | 5.64 |
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