GC Analysis of Agricultural Pesticides (Standard) on SLB®-5ms
Materials
analytical column
CONDITIONS
column
SLB-5ms, 30 m x 0.25 mm I.D, 0.25 μm (28471-U)
oven
100 °C (1 min), 10 °C/min to 300 °C (5 min)
inj. temp.
250 °C
MSD interface
300 °C
scan range
selected ion monitoring (SIM), 7 monitoring groups used
carrier gas
helium, 1 mL/min constant
injection
1.0 μL pulsed (20 psi until 0.20 min), splitless (1.0 min)
liner
4 mm I.D., single taper
sample
29-component pesticide mix plus 1 internal standard, each at 100 ppb in toluene
Description
Analysis Note
This application illustrates the analysis of 29 different agricultural pesticides of different classifications and functionalities. The analysis was done by GC-MS using selected ion monitoring (SIM) to allow detection of all compounds at 100 μg/L. The
standard solution was made in toluene to increase it stability and enhance response of some of the pesticides. The extra peaks in the first portion of the run are due to interferences from the solvent.
Legal Information
SLB is a registered trademark of Sigma-Aldrich Co. LLC