摘要
用长波近红外光谱仪(傅里叶变换,InGaAs检测器)和短波近红外光谱仪(光栅分光,CCD检测器)对比研究了25%～30%过氧化氢水溶液中过氧化氢含量的定量分析方法.结果表明,应用短波近红外光谱结合长光程样品池对25%～30%过氧化氢水溶液样品中过氧化氢含量进行定量分析,可以显著减少过氧化氢分解对定量分析的干扰,使定量分析的准确度和重复性显著提高.短波近红外光谱定量分析模型RMSECV和RMSEP分别为0.06和0.05;长波近红外光谱定量分析模型RMSECV和RMSEP分别为0.10和0.09.
The quantitative analysis of hydrogen peroxide in water solution （25% -30% ） is studied on short wavelength near-infrared spectrometers （Grating, CCD Detector） and long wavelength near-infrared spectrometers （FT, InGaAs Detector） respectively. It was found that analytical accuracy obtained from SW-NIR （short wavelength near-infrared） spectrometer with long optical path is significantly better than LW-NIR （long wavelength near-infrared） with short optical path, because long pathlength can compensate the affect of bubble （come from degradation of hydrogen peroxide ） on spectral measurement precision at some extent. The root mean square error cross-validation （RMSECV） and root mean square error of cross validation and prediction （RMSEP） is 0.06 and 0.05 respectively for SW-NIR model, 0.10 and 0.09 for LW-NIR model. The above results show the feasibility of SW-NIR technology for the determination of the concentration of.hydrogen peroxide （25% - 30% ） in water solution.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2005年第10期1445-1448,共4页
Chinese Journal of Analytical Chemistry
基金
科技部"十五"科技攻关项目(No.2004BA210A03)
