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w=-0.0466λ＋12.388,线性相关系数R=0.999 3。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0.15%-0.20%。新方法操作简单,结果准确,环境友好。
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.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2011年第2期65-68,共4页
Chinese Journal of Explosives & Propellants
关键词
分析化学
硝化棉
含氮量
偏光显微镜
色那蒙法
analytical chemistry
nitrocellulose
nitrogen content
polarized light microscope
Senarmont method
