【摘要】 应用阿贝折射仪测量四氢呋喃(THF)溶液的折光率,以确定THF的水及乙醇溶液的组成。研究表明,实验数据与文献值吻合良好:THF与水及乙醇的双组分溶液折光率与组成之间有很好的规律性,前者可以用抛物线关系式描述,后者可以用线性关系式描述,其相关系数R在0.99以上,标准偏差SD在0.0015以下,完全可以应用于相关溶液组成的测定。更多还原

【Abstract】 This paper introduces a method with which the compositions of THF solutions can be determined by measuring their refractive indexes.It has been showed by experiment that there are excellent principles between the refractive indexes of THF solutions and their compositions.The relation between refractive indexes of THF aqueous solution and its compositions can be expressed as a parabola line,and those of THF-C2H5OH solutions and their compositions can expressed as straight lines,with R not smaller than 0.99 and SD not bigger than 0.015,which can be used to determine the compositions of several solutions.更多还原