双甲脒通过2步水解可生成具有强荧光的物质2,4-二甲基苯胺,据此原理建立了测定残留双甲脒的荧光分析方法.双甲脒的检出限为0.94 μg/L,线性动态范围是3.62~1 182μg/L,样品的加标回收率在82.7%~87.2%.方法已用于梨中残留双甲脒的测定.
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