Sample | Pesticide Residue (ppb) | ||||
Before | After | Mean ± SD | |||
1st | 2nd | ||||
BRH | Atrazine | 6.2 | 0.34 | 0.28 | 0.31 ± 0.04 |
Clomazone | 2.4 | 1.12 | 0.84 | 0.98 ± 0.20 | |
Desethylatrazine | 0.62 | 0.5 | 0.34 | 0.42 ± 0.01 | |
Metribuzin | 0.34 | 0.24 | 0.22 | 0.23 ± 0.01 | |
Metolachlor | 17.2 | 10.16 | 7.82 | 8.99 ± 1.66 | |
Metalaxyl | 0.08 | 0.04 | 0.04 | 0.04 ± 0.00 | |
Propanil | 0.08 | ND | ND | NA | |
Dimethenamid | 0.16 | ND | ND | NA |