A method was reported tor the determination of 4 pyrethroids (permethrin, cyper-methrin, fenvalerate and deltameibrin) residues in grains, such as rice, millil and corn, us-ing off-line supercritical fluid extraction and gas chormatography. Under oprimized condi-tion, pyrethroids were extracted, and collected into hexane, and directly detected by gas chromatography. The whole analysis time is less than 1h.
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