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建立了快速溶剂萃取-气相色谱法同时测定含脂羊毛中28种有机氯、拟除虫菊酯杀虫剂残留量的方法.在80℃、10.34 MPa条件下用正己烷饱和的乙腈快速提取样品,提取物经冷冻除脂、浓缩、固相萃取净化处理后直接用气相色谱分析.结果表明:16种有机氯杀虫剂在0.005~1.0 mg/L范围内,9种拟除虫菊酯杀虫剂及三氯杀螨醇、三氯杀螨砜在0.01~2.0 mg/L范围内,氟氯苯菊酯在0.02~4.0 mg/L范围内,其峰面积与质量浓度呈良好的线性关系.28种有机氯、拟除虫菊酯杀虫剂的平均回收率为67.2%~107.7%,相对标准偏差为2.6%~29.0%.结果表明:该方法具有操作简便、快速方便、灵敏度高等特点,完全可满足含脂羊毛中28种有机氯拟除虫菊酯杀虫剂残留量初筛检测的要求.

参考文献

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