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用偏光显微镜检测硝化棉的含氮量
引用本文:苏鹏飞,陈智群,王景荣,邵自强,张皋,李文杰,王明.用偏光显微镜检测硝化棉的含氮量[J].火炸药学报,2011,34(2):65-68.
作者姓名:苏鹏飞  陈智群  王景荣  邵自强  张皋  李文杰  王明
作者单位:1. 西安近代化学研究所,陕西,西安,710065
2. 北京理工大学材料学院,北京,100081
摘    要:建立了偏光显微镜测定硝化棉含氮量的新方法.采用色那蒙法测定了平均光程差.结果表明,当硝化棉含氮量为11.0%~13.8%时,光程差与含氮量线性相关,线性回归方程为ω=-0.0466λ+12.388,线性相关系数R=0.9993.用硝化棉标准物质对新方法检测结果进行了验证,回收率为99.7%~100.2%,变异系数为0....

关 键 词:分析化学  硝化棉  含氮量  偏光显微镜  色那蒙法

Determination of the Nitrogen Content in Nitrocellulose Using Polarized Light Microscope
SU Peng-fei,CHEN Zhi-qun,WANG Jing-rong,SHAO Zi-qiang,ZHANG Gao,LI Wen-jie,WANG Ming.Determination of the Nitrogen Content in Nitrocellulose Using Polarized Light Microscope[J].Chinese Journal of Explosives & Propellants,2011,34(2):65-68.
Authors:SU Peng-fei  CHEN Zhi-qun  WANG Jing-rong  SHAO Zi-qiang  ZHANG Gao  LI Wen-jie  WANG Ming
Affiliation:1(1.Xi′an Modern Chemistry Research Institute,Xi′an 710065,China;2.School of Material Science and Engineering,Beijing Institute of Technology,Beijing 100081,China)
Abstract:A novel method for determination of the nitrogen content in nitrocellulose was established using a polarized light microscope.Senarmont method was used to determine the average optical path difference.The results show that the relationship(w=-0.0466λ+12.388) between the nitrogen content and the optical path difference was linear with a correlation coefficient of 0.9993 when the range of the nitrogen content in nitrocellulose were 11.0%-13.8%.Certified nitrocellulose reference materials were used to evaluate the method and the results show that the recoveries ranged from 99.7% to 100.2% with the relative standard deviations falling between 0.15% and 0.20%.The method is simple,accurate and environment-friendly.
Keywords:analytical chemistry  nitrocellulose  nitrogen content  polarized light microscope  Senarmont method  
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