1 Introduction
Phenol | 2-chlorophenol | 2,4-dichlorophenol | 2,4,6-trichlorophenol | |
---|---|---|---|---|
State of aggregation | Solid | Liquid | Solid | Solid |
Density (g/cm3) | 1.06 | 1.26 | 1.38 | 1.68 |
Partition coefficient (octanol/water) log Kow
| 1.46 | 2.15 | 3.06 | 3.69 |
Biodegrability (%/days) | 85/14 | 0/14 | 0/28 | |
LD50 oral, rat (mg/kg) | 317 | 670 | 47 | 887 |
Toxicity for Daphnia magna EC50 (mg/L, 48 h) | 4.2 | 7.4 | 1.4 | 3.3 |
2 Experimental
2.1 Chemicals and eluents
2.2 Synthesis of polymeric microspheres (BES.DM + GMA)
2.3 Modifications of (BES.DM + GMA) copolymer
2.4 Characterization of obtained sorbents
2.5 Solid phase extraction (SPE) experiments
3 Results and discussion
3.1 Structure and characteristic of polymers
3.1.1 Characterization of porous structure
SBET (m2/g) | Vt (cm3/g) | Vmi (cm3/g) | W (nm) | |
---|---|---|---|---|
BES.DM + GMA | 39.1 | 0.215 | 0.001 | 20.8 |
BES.DM + GMA + TETA | 27.0 | 0.220 | 0.001 | 28.9 |
BES.DM + GMA + BDA + HCO3
−
| 54.9 | 0.384 | 0.002 | 25.3 |
BES.DM + GMA + DETA + HCO3
−
| 52.7 | 0.352 | 0.002 | 24.3 |
3.1.2 ATR/FTIR spectra
3.1.3 Characteristic of surface chemistry
C (%) | H (%) | N (%) | pH | CEC (mmol/g) | AEC (mmol/g) | |
---|---|---|---|---|---|---|
BES.DM + GMA | 59.74 | 6.44 | 4.56 | 0.30 | 0.41 | |
BES.DM + GMA + TETA | 53.57 | 7.45 | 8.13 | 9.91 | −1.91 | 3.54 |
BES.DM + GMA + BDA + HCO3
−
| 58.31 | 7.09 | 3.06 | 5.81 | 0.21 | 2.04 |
BES.DM + GMA + DETA + HCO3
−
| 55.50 | 7.16 | 4.21 | 8.83 | 0.15 | 2.48 |