Simultaneous Analysis of Pyrethroid Pesticides by Thin Layer Chromatography, Gas Chromatography/Mass Spectrometry and Liquid Chromatography/Mass Spectrometry

Simultaneous analytical methods for 33 pyrethroids by thin layer chromatography (TLC), gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS) have been developed. The detection limits of the pyrethroids were 1 μg or less by TLC, 10-100 pg by GC/MS (SIM mode) and 5-200 pg by LC/MS (SIM mode, except for transfluthrin (2 ng)). The proposed methods were applicable to the analysis of the pyrethroids mixed into drinks and foods.