|  | Sandy loam | Loam | ||||||
---|---|---|---|---|---|---|---|---|---|
Antibiotic | Ionic strength (mM) | Kd(L/kg) | R2 | Kf | R2 | Kd(L/kg) | R2 | Kf | R2 |
Sulfamethazine | 30 | 10.3 ± 0.5 | 0.999 | 26 | 0.992 | 5.5 ± 0.8 | 0.991 | 46 | 0.978 |
 | 50 | 10 ± 1 | 0.994 | 47 | 0.991 | 7.5 ± 0.5 | 0.997 | 59 | 0.960 |
 | 250 | 7 ± 3 | 0.913 | 54 | 0.974 | 2.8 ± 0.3 | 0.995 | 84 | 0.917 |
Tylosin | 30 | 500 ± 45 | 0.969 | 1640 | 0.969 | 190 ± 30 | 0.984 | 2689 | 0.919 |
 | 50 | 2.9x103 ± 1x102 | 0.999 | 4411 | 0.980 | 600 ± 300 | 0.886 | 3109 | 0.972 |
 | 250 | 1.4x104 ± 7x103 | 0.927 | 17200 | 0.935 | 9.6x103 ± 7x102 | 0.998 | 5555 | 0.937 |