Table 1.
Adsorption capacities of β-CD-HMDI(a) and β-CD-TDI(b) in single solute solution and mix solution. (time: 24 hours; concentration: 100 ppm; volume: 50 mL). MP: methyl-paraben; EP: ethyl-paraben; PP: propyl-paraben; BP: benzyl-paraben.
| Adsorbent | Paraben | Single solute solution | Mix solution | ||
|---|---|---|---|---|---|
| Adsorption capacity (mmol/g) | R.S.D.(%) n = 3 | Adsorption capacity (mmol/g) | R.S.D.(%) n = 3 | ||
| β-CD-HMDI(a) | MP | 0.0305 | 9.08 | 0.0239 | 7.51 |
| EP | 0.0376 | 9.36 | 0.0357 | 7.56 | |
| PP | 0.1854 | 5.67 | 0.0715 | 7.33 | |
| BP | 0.3026 | 8.10 | 0.2769 | 7.06 | |
| Total | 0.4080 | ||||
| β-CD-TDI(b) | MP | 0.1019 | 3.03 | 0.0324 | 5.42 |
| EP | 0.1286 | 3.22 | 0.0508 | 6.31 | |
| PP | 0.2551 | 3.04 | 0.1150 | 2.73 | |
| BP | 0.3699 | 3.44 | 0.3570 | 9.69 | |
| Total | 0.5552 | ||||