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.
出处
《现代农药》
CAS
2008年第6期25-28,共4页
MODERN AGROCHEMICALS
关键词
热分解
非等温动力学
等温动力学
吡虫啉
保质期
thermal decomposition
non-isothermal kinetics
isothermal kinetics
imidacloprid
shelf life
