定量测定混合粘土矿物的新方法-差示光谱-概率分布法

本文在系统研究差示光谱的基本理论和傅里叶变换光谱具有最高信噪比(1.5×104:1)的特性的基础上.证明:差示光谱的吸收强度偏差小于0.01%.为此奠定了粘土矿物定量的基础.为了简化其繁杂的计算过程,笔者把差示光谱和概率分布计算方法巧妙地融洽在一起,推导出可以实现全频率范围的差示光谱-概率分布定量的最终方程:<<<<< 图1 >>>>>>>>>>.根据此方程,编写成一种新的适用于混合粘土矿物定量的应用软用.为了检验新方法效果,笔者将它应用于人工配制的五种混合粘土矿物的定量测定.结果其相对标准偏差σ<0.5%,绝对误差为0.01-0.05%.实验结果表明,差示光谱-概率分布定量法是一种适用于粘土矿物快速,准确定量的可行性的方法.

QUANTITATIVE ANALYSIS METHOD OF PROBABILITY DISTRIBUTION OF FT-IR DIFFERENCE SPECTRUM FOR MIXTURE MINERALS

A simple reproducible, rapid, and high precise probability density method of difference spectrum for quantative analysis testing of mineral mixtures is discussed.It is particularly simple to use in that requires no selection of peaks and more complicated calculation like least-squares curve-fitting1-4, and requires only to solve mean values known and unknown spectra ratio in full frequancies range. In all samples tested, this method produces results as good as.