改性B炸药主要组分的近红外光谱检测方法

Detection Method of the Main Components in Modified Composition B by Near Infrared Spectroscopy

采用近红外光谱技术,研究了改性B炸药近红外光谱快速组分检测方法。采用偏最小二乘法(PLS)建立了主要组分梯恩梯(TNT)和黑索今(RDX)的定量模型。所建模型的交互验证决定系数(R^2)分别为0.961、0.9415,内部交互验证的均方根误差(RMSECV)分别为0.478%、0.501%,外部验证的均方根误差(RMSEP)分别为0.555%、0.521%,表明所建定量模型具有较高的准确度和精密度。用近红外法的测定值与标准分析法的参考值进行t检验的计算结果为t_(RDX)=1.03,t_(TNT)=0.72,均小于临界值t_9=2.26(α_9=0.05),这表明,近红外光谱法与标准分析法无显著性差异。

A rapid component detection method of modified Composition B was studied by near infrared spectrum technology.The quantitative models of main components TNT and RDX were established by partial least squares(PLS)method.Results show that the coefficients of determination of cross-validation(R2)of established models are 0.9611,0.9415,respectively.The root mean square errors of cross-validation(RMSECV)are 0.478%,0.501%,respectively,and the root mean square errors of prediction(RMSEP)of external-validation are 555%,521%,respectively,showing that the established quantitative model has high accuracy and precision.The calculated results of t-test performed by determined values of near infrared method and reference values of the standard analysis method are tRDX=1.03,tTNT=0.72,respectively.Their t values are smaller than the critical value t9=2.26(α9=0.05),revealing that there is no significant difference between the near infrared spectroscopy and the standard analysis method.