The samples from the market were ultrasonic extracted by methanol before analysis with stir bar sorptive extraction-thermal desorption system-gas chromatography-mass spectrometry (SBSE-TDS-GC-MS).

• 采用固相萃取搅拌棒(SBSE)萃取茶叶中的拟除虫菊酯类农药,再用热脱附-气质联用仪分析。