In 2004 the US Food and Drug Administration (FDA) passed a law that describes the requirements for allergen labelling and customer protection (Public law 108 – 282 Title II).
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A robust and sensitive method for the direct analysis of polar pesticides in food and environmental samples without derivatisation
This application note discusses how some polar compounds are not amenable to the extraction procedure. It discusses how chromatographic methods or poor ionisers require additional single-residue methods which involve time-consuming preparation and separation, and often involve derivatisation to improve detection.