非线性建模红外光谱法测定三聚氰胺的研究  

Determination of Melamine by Infrared Spectroscopy Based on Nonlinear Modeling

作　　者：张恒[1] 高曼侠[1] 许兆棠[2] 李文谦[1] 王琪[1] 

机构地区：[1]淮阴工学院生命科学与化学工程学院,江苏淮安223003 [2]淮阴工学院交通工程学院,江苏淮安223003

出　　处：《安徽农业科学》2011年第1期583-584,590,共3页Journal of Anhui Agricultural Sciences

基　　金：江苏省高校科研成果产业化推进项目(JHZD09-35);江苏省高校自然科学研究项目(09KJD210001);淮阴工学院科研基金重点项目(HGA0908)

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.

关 键 词：红外光谱 定量分析 非线性模型 三聚氰胺 

分 类 号：S379.9[农业科学—农产品加工]