建立了加速溶剂萃取(ASE)-气相色谱-串联质谱(GC-MS/MS)法用于测定茶叶中10种吡唑和吡咯类农药残留.ASE萃取压力为1.03 × 107 Pa,萃取温度为100℃,萃取时间为5 min,萃取溶剂为乙酸乙酯-正己烷(1∶1,v/v).萃取循环1次,萃取液浓缩后用Envi-Carb/PSA固相萃取小柱净化,乙酸乙酯-正己烷(1∶1,v/v)洗脱.洗脱液浓缩后,用正己烷定容,供GC-MS/MS测定,外标法定量.方法的准确度和精密度均符合残留分析要求.方法的定量限(LOQ)分别为唑螨酯0.003 mg/kg、氟虫腈硫化物0.001 mg/kg、氟虫腈0.002 mg/kg、氟虫腈砜化物0.005 mg/kg、溴虫腈0.002 mg/kg、氟硅唑0.006 mg/kg、野燕枯0.001 mg/kg、吡草醚0.001 mg/kg、吡螨胺0.000 3 mg/kg、唑虫酰胺0.005 mg/kg.方法的灵敏度能满足各国有关农药的残留限量要求.
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