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当前位置: 首页 > 文章 > 基于金、银溶胶的表面增强拉曼光谱法测定苹果中马拉硫磷含量对比研究 食品科学 2014 (20) 198-201
Position: Home > Articles > Determination of Malathion in Apple Fruit Based on Surface Enhanced Raman Scattering on Golden vs Silver Sols FOOD SCIENCE 2014 (20) 198-201

基于金、银溶胶的表面增强拉曼光谱法测定苹果中马拉硫磷含量对比研究

作  者：
刘翠玲;苗雨晴;孙晓荣;赵琦
单  位：
北京工商大学计算机与信息工程学院
关键词：
表面增强拉曼散射;逐步多元线性回归;金溶胶;银溶胶;马拉硫磷
摘  要：
使用共焦显微拉曼光谱仪,结合表面增强拉曼散射技术,将含有农药马拉硫磷的苹果汁样本进行一定的前处理后,分别采集其基于金、银溶胶的表面增强拉曼光谱,结合逐步多元线性回归方法对两种光谱分别进行数学建模分析。结果表明,在0.01~0.5 mg/kg的线性范围内,基于金溶胶所建立的模型相关系数(R2)为0.999 6,校正标准差为0.001 86 mg/kg,真实值与拟合值差异最大不超过0.003 mg/kg,而基于银溶胶所建立的模型相关系数(R2)为1,校正标准差为0.000 78 mg/kg,真实值与拟合值差异最大不超过0.001 2 mg/kg,预测标准差分别为0.213 mg/kg和0.146 mg/kg,银溶胶效果优于金溶胶。
译  名：
Determination of Malathion in Apple Fruit Based on Surface Enhanced Raman Scattering on Golden vs Silver Sols
作  者：
LIU Cui-ling;MIAO Yu-qing;SUN Xiao-rong;ZHAO Qi;College of Computer and Information Engineering, Beijing Technology and Business University;
关键词：
surface enhanced Raman scattering(SERS);;stepwise multiple linear regression(SMLR);;golden(Au) sol;;silver(Ag) sol;;malathion
摘  要：
Confocal Raman micro-spectrometry combined with surface enhanced Raman scattering(SERS) was used for collecting surface enhanced Raman spectra of apple samples containing the pesticide malathion. Stepwise multiple linear regression(SMLR) method was used to build two mathematical models for quantitative analysis based on golden and silver sols, respectively. The results showed that within the linear range of 0.01–0.5 mg/kg, the correlation coefficient of the gold sol model was 0.999 6, with root mean square error of calibration(RMSEC) of 0.001 86 mg/kg, and the maximum difference between the actual and calculated values was less than 0.003 mg/kg. The correlation coefficient of the silver sol model was 1, with RMSEC of 0.000 78 mg/kg, and the maximum differences between the actual and calculated value did not exceed 0.001 2 mg/kg. The prediction standard deviations for the golden and silver sol models were 0.213 mg/kg and 0.146 mg/kg, respectively. These results indicate that the effect of silver sol in quantitative analysis of malathion is better than that of gold sol.

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