This document describes a method for pesticide residue analysis in agricultural products. By using a 0.15 mm small diameter capillary GC column, 200 pesticide residues can be separated and quantified quickly and successfully. This method improves instrument productivity and reduces detection limits while improving signal to noise ratios.
This document presents a method for the high productivity analysis of pesticide residues in vegetable matrices using Gas Chromatography/Mass Spectrometry (GC/MS). The primary focus is on utilizing 0.15 mm small diameter capillary GC columns to significantly reduce analysis time while maintaining separation quality.
The note details specific instrument conditions, including the use of a Varian CP-3800/450-GC and a Varian 4000/240-MS Ion Trap detector. It highlights that the method allows for the separation and quantification of 200 pesticides in less than 20 minutes, compared to 35 minutes with standard columns, while increasing sensitivity four-fold.
| Column ID | 0.15 mm |
|---|---|
| Column Film Thickness | 0.15 um |
| Carrier Gas | Helium |
| Injector Type | PTV |
| Detector | Ion Trap |
| Analysis Time (New) | less than 20 min |
| Analysis Time (Original) | 35 min |
The main benefit is a significant reduction in analysis time, increasing instrument productivity by as much as 50% in some cases.
Overall sensitivity has increased four fold due to fast elution on the 0.15 mm ID column.
A temperature programmable splitless injection using the Varian 1079 Programmable Temperature Vaporizing Injector (PTV) is recommended.