This product is high capacity of adsorption and choice for organophosphorus pesticide such as Dipterex, methamidophos, Acephate, omethoate, monocrotophos, dimethoate, phosphamidon, parathion methyl and malathion and so on。
1. Sample extraction: You should weigh accurately 1g samples, then ultrasonic extract samples 3 times with 30 ml double distilled water solution, then merge the extracted liquid .
2。 Enrichment and purification: You should wet clean MISPE column with 6 mL methanol and double distilled water。 Then you exact extracted fluid by controlling flow velocity。 Pesticide molecules selectively adsorb functional material. The others are flowed out as waste liquid. First you can wash away impurities with 5 ml hexane with the MISPE column first, then elute impurity with 2 ml methanol / acetic acid (95:5, v/v) and then the eluent can be gotten. Now the collected eluent is dried by nitrogen. Then the eluent is repeated dissolved in 0.2 ml dichloromethane. Then it is filtrated by filtration membranes of 0.45μm.