Table 3. Comparison of the Capacity of Original SiO2 and Fluorescent Microspheres in Adsorption of Hg2+a.
| original SiO2 | SiNBB | SiNBIT | SiNBIO | |
|---|---|---|---|---|
| initial Hg2+/mg | 150 | 150 | 150 | 150 |
| adsorption quality m1 mg/50 mg·1 h | 28.2 | 145.7 | 49.9 | 49.4 |
| adsorption quality m2 mg/50 mg·5 h | 69.3 | 149.6 | 108.6 | 128.4 |
| adsorption efficiency Y1/50 mg·1 h | 18.8% | 97.1% | 33.2% | 32.9% |
| adsorption efficiency Y2/50 mg·5 h | 46.2% | 99.7% | 72.4% | 85.6% |
| absolute adsorption quality M | 0.56 g | 2.91 g | 0.99 g | 0.98 g |
Performance of original SiO2 and fluorescent microspheres for adsorption of Hg2+ by AAS (“M” is the mass of Hg2+ that can be adsorbed by per gram of microspheres).