摘要
提出了一种在校正模型不确定时分析体系的光谱多元分析方法,首先构造投影阵以检验校正模型的合理性,通过检验可以发现分析体系是否含有其它不纯物,继用不纯物在投影空间中的矢量与可能存在物质的投影光谱进行检索比较,检出不纯物并测出各组份含量.将此法应用于3个分析体系,获得满意的结果.
The calibration model of a multivariate spectrophotometric system is said to be incorrect, if some interferent impurity component is present in the system and not included in the calibration model. A method based on the matrix projection procedure is developed in this paper for testing the calibration model for such system. If the test shows that the analytical system contains an interfering component, the projection vectors of possibly existing in the system are compared with that of the sample mixture to find out the existing interfering species. The experimental data of three analytical samples were analyzed by the proposed method, and satisfactory results were obtained.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1989年第11期1081-1085,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
光谱分析
校正模型检验
投影算法
Calibration model testing, Chemometrics, Background correction, Projection algorithm
