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。

Amitraz can be hydrolyzed as 2,4-xylidine with strong fluorescence. Based on the principle, the fluorescent analytical method of determining residue amitraz is developed.

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第二部分脒类化合物的合成。

The second part is the synthesis of amidines.

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