Table 1.
Effects of different metal ions on the stability of WSSM.
| Metal Ion | Ion Concentration μg/mL |
The Retention Rate of WSSM/% | Color and State of the Solution |
|---|---|---|---|
| K+ | 50 | 100 | — |
| 100 | 99 | — | |
| 200 | 84 | — | |
| Ca2+ | 50 | 99 | — |
| 100 | 98 | — | |
| 200 | 96 | — | |
| Mg2+ | 50 | 95 | — |
| 100 | 94 | — | |
| 200 | 92 | — | |
| Zn2+ | 50 | 87 | — |
| 100 | 84 | — | |
| 200 | 83 | — | |
| Fe2+ | 50 | — | Black precipitate |
| 100 | — | Black precipitate | |
| 200 | — | Black precipitate | |
| Fe3+ | 50 | — | Yellow precipitate |
| 100 | — | Yellow precipitate | |
| 200 | — | Yellow precipitate | |
| Al3+ | 50 | — | Yellow precipitate |
| 100 | — | Yellow precipitate | |
| 200 | — | Yellow precipitate | |
| Cu2+ | 50 | — | Blue precipitate |
| 100 | — | Blue precipitate | |
| 200 | — | Blue precipitate |