Lorentz-Lorenz公式在混合溶液密度计算中的应用研究  

APPLICATION OF LORENTZ-LORENZ FORMULA IN DENSITY CALCULATION OF MIXED SOLUTION

作　　者：辛督强[1,2] 刘薇[2] 张涛[2] 

机构地区：[1]西京学院基础部,西安710123 [2]北京师范大学射线束技术与材料改性教育部重点实验室,北京师范大学核科学与技术学院,北京100875

出　　处：《北京师范大学学报（自然科学版）》2009年第2期149-151,共3页Journal of Beijing Normal University(Natural Science)

基　　金：教育部优秀青年教师计划资助项目;北京市科技新星计划资助项目(952870400)

摘　　要：将Lorentz-Lorenz公式拓展并应用到混合溶液密度的计算,试图解决混合溶液密度计算难、精度较差的问题.本文计算方法简单,只需各纯组分的密度,就可计算出相同外界条件下该溶液的密度.计算了3个不同温度下,多种不同体积分数的碳酸二甲酯+辛烷溶液的密度值,来验证该方法的合理性,结果计算值与实验测量值吻合得非常好,平均绝对偏差仅为0.0059,最大绝对偏差也不超过0.0086.这为科研和生产过程中,特别是高温、高压下,以及强腐蚀性、高危险性溶液等情况下,准确计算溶液密度提供了方便.Lorentz-Lorenz formula is generally applied in refractive index calculation of solution, which is developed and used to calculate solution density in order to solve complex matter and bigger departure in other formula. The calculation is simple; solution densities can be calculated when the density of each pure solution is known. The density of dimethyl carbonate ff- octane mixtures has been calculated to verify rationality of the formula at different temperature and concentration. It was found that calculated density values agreed well with experimental data, mean departure being 0. 005 9, and biggest absolute departure being 0. 008 6.

关 键 词：Lorentz-Lorenz公式 密度计算 溶液 实验验证 

分 类 号：TQ133.1[化学工程—无机化工] TU995[建筑科学—供热、供燃气、通风及空调工程]