Using the AOAC buffered extraction method followed by the use of the Universal Dispersive SPE method for preparing lettuce and apple samples for residue analysis by GC/MS
This document details the use of the Agilent Bond Elut QuEChERS AOAC Extraction Kit combined with Universal Dispersive SPE for preparing lettuce and apple samples for residue analysis by GC/MS. The study evaluated twenty-six pesticides of different classes using buffered extraction methods.
| Sample weight | 15 g (+ 0.05 g) |
|---|---|
| Extraction solvent | 1% acetic acid in acetonitrile |
| Carrier gas | Helium in constant flow mode |
Certified organic, pesticide-free, romaine lettuce and red delicious apples were used.
Twenty-six pesticides of different classes were studied.
Samples were analyzed using an Agilent 7890 GC System with an Agilent 5975C Series GC/MSD.