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Analyzing QuEChERS Samples
• Rxi-5Sil MS
– Gas chromatography
• Equivalent to popular DB-
5MS
– Selectivity
– Rxi-5Sil MS is more inert and
has lower bleed
• 30m x 0.25mm x 0.25μm
suggested
– Has capacity, is rugged
towards “dirt”, inert
• Ultra Aqueous C18
– HPLC
• Excellent peak shapes for
early eluting, polar
pesticides!
– Methamidophos, acephate
• 100mm x 2.1mm, 3μm
suggested
– FDA and AB Sciex SRM and
retention time data
• >280 pesticides
– Restek FFFF1185.pdf