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An effective method for the simultaneous determination of docosahexaenoic acid and eicosapentaenoic acid in common seafood by gas chromatography was developed and validated. Total docosahexaenoic acid and eicosapentaenoic acid were extracted from seafood by ultrasonic cell crusher assisted extraction and methyl esterified for gas chromatography analysis in the presence of the internal standard. The...
An ultra‐fast liquid chromatography‐electrospray ionization tandem mass spectrometry method was developed and validated to simultaneously screen, confirm, and determine 18 illegal adulterants in herbal medicines and health foods for male sexual potency. The separation was achieved on a Shim‐Pack XR‐ODS II column (2.0 × 100 mm, 2.2 μm) with acetonitrile and aqueous solution (12 mmol/L ammonium formate,...
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