Two-layer sorbent bed used for pesticide clean-up in food matrices prior to GC analysis. PSA provides alternative selectivity compared to aminopropyl.
JPMHLW official methods for pesticides in food.
Particle Size: 37-105 µm [carbon black, top layer] 37-55 µm [PSA, bottom layer] Quantity: 500 mg of each sorbent seperated by a frit.
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