Newer pesticides are smaller in molecular weight and break down rapidly in the environment, making successfull identification and quantification of these compounds in foods more challenging.

This study covers how the The determination of pesticides in fruits, vegetables, grains and herbs has been simplified by QuEChERS, a new sample preparation method. In the study, the Thermo Scientific ITQ 700 GC-ion trap MS showed excellent accuracy at low concentrations for a large number of pesticide residues analyzed in green tea.

Using the instrument's MSn functionality allows the user to identify, confirm, and quantify in one analytical run.