agriculture analytical Downloads
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Rapid Determination of Pesticides in Spinach
Using Supel™ Sphere Carbon/NH2 and an SLB®-5ms GC ColumnHighly pigmented foods, such as spinach, require cleanup prior to analysis for pesticide residues. A dual-layer SPE tube containing graphitized carbon and aminopropyl on silica (NH2) is often used. • Carbon removes pigments and sterols• NH2 removes fatty acids, polar pigments, organic acids, and sugarsRemoving these matrix materials reduces ...
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Testing for Aflatoxins in Corn and Peanut Butter using QuEChERS Cleanup and LC Fluorescence
Testing for Aflatoxins in Corn and Peanut Butter using QuEChERS Cleanup and LC Fluorescencewww.sigma-aldrich.com•Olga Shimelis, Michael Ye, Ken Espenshield, and Len SidiskySupelco, Div. of Sigma-Aldrich, Bellefonte, PA 16823 USAT4110972IntroductionQuEChERS stands for Quick, Easy, Cheap, Effective, Rugged, Safe and is used as a dispersive SPE (dSPE) method. It is widely used for cleanup of ...
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