气相色谱法测定大米粉中敌敌畏的残留量
Anhui Agricultural Science Bulletin(2019)
Abstract
使用气相色谱法分析大米粉中敌敌畏残留量,样品超声用二氯甲烷萃取,然后通过DB-1701毛细管气相色谱柱和火焰光度检测器确定,并且通过外标法进行定量.结果表明:在该检测方法下,敌敌畏的线性范围为5~80ng/mL,相关系数为0.99927,检出限为0.015mg/kg,相对标准偏差为2.40%,平均加标回收率为89.0%~92.6%,RSD(n=6)为1.73%~1.94%.该方法适用于大米粉中敌敌畏残留量的检测分析.
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