摘要
使用太赫兹时域光谱技术(THz-TDS)对葛粉中苯甲酸含量进行了定量分析。检测样品为有塑料包装袋的葛粉。对原始数据进行多元散射校正、基线校正、一阶导数、二阶导数等预处理,利用偏最小二乘(PLS)法对葛粉中苯甲酸的含量建立预测模型。检测结果显示:无塑料包装袋样品的模型决定因子为0.975,预测集的均方根误差(RMSEP)为1.126%;有塑料包装袋样品的模型决定因子为0.976,RMSEP为1.356%。
The terahertz time domain spectroscopy(THz-TDS)is used to quantitatively analyze the benzoic acid content in arrowroot,and the arrowroot is with a plastic bag.The original data are subjected to the pretreatments of multiple scattering correction,baseline correction,first derivative,second derivative,and so on.The partial least square(PLS)method is used to establish a prediction model for the detection of benzoic acid content in arrowroot.The detection results show that model-determining factor for samples without plastic bags is 0.975 and the predicted root mean square error(RMSEP)is 1.126%.In contrast,that for samples with plastic bags is 0.976 and the RMSEP is 1.356%.
作者
刘燕德
杜秀洋
李斌
胡军
吴建
郑艺蕾
Liu Yande;Du Xiuyang;Li Bin;Hu Jun;Wu Jian;Zheng Yilei(Institute of Optics-Mechanics-Electronics Technology and Application(OMETA),East China JiaoTong University,Nanchang,Jiangxi 330013,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2019年第4期123-129,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(31760344)
江西省优势科技创新团队建设计划项目(20153BCB24002)
南方山地果园智能化管理技术与装备协同创新中心(赣教高字[2014]60号)
关键词
成像系统
太赫兹时域光谱
苯甲酸
偏最小二乘法
葛粉
塑料包装
imaging systems
terahertz time domain spectroscopy
benzoic acid
partial least square method
arrowroot
plastic packaging
