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Featured Analytical Instrument
FB-002 Pesticides Analyzer
The conventional analysis of pesticides in food products with high fat content is labor intensive and time consuming. The high concentration of fatty acids from extracts greatly interferes with chromatographic analysis. Therefore sample preparation is a crucial step in the analytical procedure. The QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction used as a rapid method of analysis for pesticides in fruit and vegetables, lacks capacity to remove fatty acids from samples high in fat content.
The most commonly used methodology is based on GC after a comprehensive clean-up step, in most cases based on liquid–liquid partitioning or gel permeation chromatography (GPC) to separate the low molecular mass pesticides from the higher molecular mass fat constituents such as triglycerides.