摘要
质量吸收系数法的提出已十多年了,但在地质样品的定量相分析中至今尚无人尝试。作者计算了常见非金属矿物的质量吸收系数,用 m 个试样对 n 个物相(m>n)进行最小二乘处理,即令(?)sum from j=1 to m(sum from i=i to n M_(ijs)X_(i(?)-1)~2/(?)X_(is)=0,回归求得 X_(is)大大提高了精度、而且全部计算由计算机完成,快速准确。该方法应用于滑石矿的定量分析取得较满意的结果。
Mass absorption coefficient method was proposed more than ten years ago,but its application has not been attempted in quantitative difftaction phase analysis of geologic samples up to now.The authors calculated mass absorption coefficients of common nonmetallic minerals,computed with the least-square method n phase(m>n)for m samples,namely let (?)((?)M_(ijs) X_(is)-1)~2/(?) X_(is)=0,and obtanined X_(is) with much higher precision by regression. All calculations were completed by a computer with fast and accurate reslts.The method has been applied to quantitative analysis of talc and yielded satisfactory results.
