测定混合物组成及组分含量的热重分析法

Determination of the Components of Mixture by Thermo-gravimetric Analysis

采用热重 -微商热重法确定混合物的组成及各组分的含量。通过对比混合物和可能组分的热重曲线及其微分曲线 ,比较它们的最大失重速率温度及在某一特定温度下的失重量可以确定混合物的组成 ,同时可以确定各组分的含量。该法对各组分含量的测定误差在5 %以内 ,相对标准偏差在6 %以内。

Thermo _ gravimetric analysis is used to determine the components and their contents of a sample of mixture. The components and their contents are simultaneously determined by comparing the temperature _ mass curves of components in sample and their derivative curves as well as the maximum rate of mass loss and the mass loss at a certain temperature in the curves to those of the possible components. The relative error of the method is less than 5% and RSD is less than 6%.