热分析动力学法推算吡虫啉的保质期  

Calculate Shelf Life of Imidacloprid by Thermal Decomposition Kinetics

作　　者：徐颖[1] 

机构地区：[1]苏州大学分析测试中心,苏州215123

出　　处：《现代农药》2008年第6期25-28,共4页MODERN AGROCHEMICALS

摘　　要：比较了吡虫啉原药和可湿性粉剂在氮气气氛下的热分解行为,通过热分析非等温TG–DTG技术运用Kissinger和Ozawa法计算吡虫啉原药的表观活化能E和指前因子A,并采用等温TG技术尝试一种新的准确、快速预测农药保质期的方法。The thermal behaviors of imidacloprid TC and 10% imidacloprid WP in a nitrogen atmosphere were studied by simultaneous TG - DTG - DTA techniques. The thermal decomposition kinetics of imidacloprid TC was investigated by means of non-thermal TG -DTG at different heating rates in nitrogen. The apparent activation energy E and the pre-exponential constant A were obtained by Kissinger method and Ozawa method. On the base of kinetic parameters, the lifetime for different temperatures was deduced through isothermal TG analysis.

关 键 词：热分解 非等温动力学 等温动力学 吡虫啉 保质期 

分 类 号：TQ453.2[化学工程—农药化工]