甲代混剂分析方法及热贮稳定性的研究

Quantitative Analysis and Stability of Heating Storage of Mixture by HPLC and Xanthated

分别采用反相液相色谱法、黄原酸盐法，测定了甲代混剂中的甲基硫菌灵和代森锰锌含量，并进行了热贮稳定性的研究。试验结果表明：该方法准确度（９９－３６ ％ ～１００－０６ ％ ） 和精确度（Ｓｘ ＝ ０－２９ ，０－５７ ，ＣＶ＝０－７８ ％ ，０－６７％ ） 符合要求。样品热贮后代森锰锌单剂热稳定性较差，相对分解率为１４－０１ ％ ；甲基硫菌灵热稳定性良好，相对分解率为０－５６ ％ ；甲代混剂热稳定性介于两者之间，相对分解率为８－０２ ％ ；甲代混剂热贮前后悬浮率分别是７５－７０ ％ 和６７－４５ ％ 。

The results showed that the accuracy ranged 99.36%～100.06% and precision was Sx 0.29, 0.57 and CV 0.78%, 0.67% accorded with the demands. Stability of mixture by heating storage during thiophante methyl and mancozed. Supensibility of mixture was 75.70% and accelerated storage by heating was 67.45%.