摘要
[目的]建立红外光谱法三聚氰胺非线性定量模型,为三聚氰胺无损检测提供理论依据。[方法]选取1550cm-1附近特征吸收峰,依据动力学、数学建模及优化理论,分别建立线性及非线性定量模型。[结果]非线性模型具有更高的准确度,用于样品定量的模型相关度为0.9227,样品回收率为96%;而线性模型的相关度只有0.9049,样品回收率为557%。[结论]非线性模型定量测定三聚氰胺含量是可行的。
[Objective] The aim was to develop a nonlinear model of quantitative analysis of melamine content by infrared spectroscopy and provide theoretical basis for the nondestructive detection of melamine. [Method] According to dynamics,mathematical modeling and optimization theory,linear and nonlinear models were respectively set up by taking an absorption peak of 1 550 cm-1 as characteristic absorption peak. [Result] The correlation coefficient of nonlinear model was 0.922 7 and the recovery was 96%,which showed that the nonlinear model was more accurate than linearity model with correlation coefficient of 0.904 9 and recovery of 557%. [Conclusion] It is feasible to determine melamine content by using the nonlinear model quantitatively.
基金
Supported by Promoting Projects of the Industrialization of University Research of Jiangsu Province (JHZD09-35)
Natural Science Research Project of Universities in Jiangsu Province (09KJD210001)
Research Foundation of Huaiyin Institute of Technology(HGA0908)~~
关键词
红外光谱
定量分析
非线性模型
三聚氰胺
Infrared spectroscopy
Quantitative analysis
Nonlinear model
Melamine
