| Substances |
1
Methyl Parathion
2 Dichlorvos 3 Ethoprophos 4 Azinphos |
|---|---|
| Eluent | 0.025M K₂HPO₄, pH7.0:Methanol (25:75) |
| Flow Rate | 1.0 mL / min |
| Detection | UV at 220nm |