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基质固相分散-气相色谱-离子阱串联质谱法分析牛奶中有机磷农药
Authors
孙若男
林竹光
陈美瑜
Publication date
15 September 2010
Publisher
Abstract
将改进的基质固相分散法与GC-MS/MS分析方法结合应用于牛奶中13种有机磷农药残留的同时分析。优化各样品前处理参数后,样品与分散剂中性氧化铝研磨后,采用乙腈超声提取。过滤浓缩后以灭线磷为内标物,采用GC-MS/MS进行定性与定量分析。从样品前处理到分析约需1 h,当样品的加标水平为50、200μg/kg时,平均加标回收率为70.4%~117.6%,相对标准偏差为0.8%~19%;除倍硫磷和毒死蜱的检测限分别为5.60和9.35μg/kg外,其它11种有机磷农药的检测限均在0.37~3.77μg/kg之间;线性范围为25~500μg/kg,相关系数均大于0.9949
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Last time updated on 16/06/2016