Recovery of Pesticides Rresiduals in Spinach

Recovery of pesticides residuals in spinach when CLNpak EV-2000 AC is used for GPC Clean-up of pesticides residuals is shown.


Sample :
1. Corn oil
2. Fluvalinate
3. Chinomethionate

Injection as spinach	Injection dry weight	40 to 60mL	60 to 130mL	Total recovery
2.5g/5mL	9.6mg	9.3mg(97%)	0.9mg(9%)	106%
5g/5mL	19.3mg	16.6mg(86%)	2.0mg(10%)	96%
20g/5mL	77.0mg	68.5mg(89%)	10.0mg(13%)	102%

Columns      : Shodex CLNpak EV-G AC (20mmID*100mm) + EV-2000 AC (20mmID*300mm) 
Eluent       : Acetone/Cyclohexane=20/80
Flow rate    : 5.0mL/min
Detector     : UV(254nm)
Column temp. : 25deg-C