Quick Start-Up for a Modified QuEChERS Multi-residue Pesticide Analysis in Lettuce by GC/MSn

This application note will cover the preparation of extracts and the optimization of the analytical parameters of the splitless injection, separation, and detection. Recently formulated pesticides are quite different in their physical properties from their predecessors such as 4,4'-DDT. Most recently formulated pesticides are smaller in molecular weight and designed to break down rapidly in the environment. Therefore, to successfully identify and quantify these compounds in foods, more careful consideration must be placed on the sample preparation for extraction and the instrument parameters for analysis.