No | Desorbing agents | Desorption efficiency/% |
---|---|---|
1 | Deionized water (pH = 2) | 0.37 |
2 | Deionized water (pH = 4) | 0.23 |
3 | Deionized water (pH = 6) | 0.59 |
4 | Deionized water (pH = 10) | 2.22 |
5 | Deionized water (pH = 12) | 2.89 |
6 | 0.1 mol L−1 HAc | 0.26 |
7 | 0.1 mol L−1 NaOH | 8.77 |
8 | 0.1 mol L−1 EDTA | 0.46 |