硝基氧化剂中四氧化二氮含量的快速测定  

Rapid Determination of N_2O_4 in Nitryl Oxidant

作　　者：邢志娜[1] 王菊香[1] 刘洁[1] 

机构地区：[1]海军航空工程学院飞行器工程系,山东烟台264001

出　　处：《鸡西大学学报（综合版）》2015年第12期48-51,共4页JOurnal of Jixi University:comprehensive Edition

摘　　要：硝基氧化剂是一种常用的液体推进剂,由于硝基氧化剂属于无机物,具有近红外光谱区域的信号相对较弱、关联性不强的特点,因此在进行近红外光谱快速分析研究时,采用一种间隔组合式的改进型偏最小二乘法(icPLS),通过特定方法筛选特征波长或波长区间,建立了硝基氧化剂的N_2O_4含量的近红外光谱分析模型,实现了硝基氧化剂的快速定量分析。通过与利用全谱建立的近红外光谱模型的分析比较,ic PLS模型的预测均方根误差(RMSEP)和R_p^2分别为0.26%(m/m)和0.8406,预测精度明显提高。实验结果表明,针对建立复杂样品且光谱信息关联性较弱的样品,ic PLS算法优于全谱PLS算法。该方法的应用对于建立近红外区域信息量不丰富的无机物的近红外定量分析模型具有重要参考价值。The rapid determination of nitryl oxidant was achieved by the means of near infrared spectroscopy （ NIR） technique . The spectral signals in NIR region were rather weak and the relativity between spectrum and property was bad due to nitryl oxidant belongs to inorganic compound .Then a modified interval and combination partial least square （ icPLS） was developed for the deter-mination of N2 O4 of nitryl oxidant .Satisfactory calibration statistics were obtained with a standard error of prediction （ RMSEP） of 0.26%and a relativity coefficient （ Rp 2 ） of 0.8406 by compared with the NIR model about the whole spectrum region .The study emphasized that icPLS excelled in the NIR determination of the special samples with complicated composition and absent spectrum information .The application of icPLS had a reference importance to develop the NIR determination model for some inorganic com -pound .

关 键 词：硝基氧化剂 快速分析 近红外光谱(NIRS) 间隔组合偏最小二乘法(icPLS) 无机物 

分 类 号：TQ116.02[化学工程—无机化工]