This document describes the analysis of organophosphorus pesticides using the Agilent J&W DB-5ms Ultra Inert capillary GC column. By employing a testing procedure to evaluate column inertness, analysts can have higher confidence in the accuracy of their results. The column provides excellent peak shape for various organophosphorus pesticides.
Agilent Technologies has implemented new testing procedures to evaluate GC column inertness, utilizing deliberately aggressive probes. This application note demonstrates trace-level organophosphorus pesticide analysis using electron impact single quadrupole scanning mass spectrometry on an Agilent J&W DB-5ms Ultra Inert capillary GC column.
The document details the experimental setup involving an Agilent 6890N GC/5975B MSD equipped with a 7683B autosampler. It presents chromatographic conditions for EPA Method 525.2 and custom standards, showing that the Ultra Inert series eliminates capillary GC column activity as a source of result uncertainty by providing excellent peak shape for problematic pesticides.
The evaluation covered a concentration range from 0.1 to 10 pg/mL.
Disulfoton, Fenamiphos, and Tribufos (DEF) were noted as the three organophosphorus pesticides of interest.