激光与光电子学进展, 2019, 56 (4): 041101, 网络出版: 2019-07-31
基于太赫兹技术的葛粉中苯甲酸的检测 下载: 1093次
Detection of Benzoic Acid in Arrowroot by Terahertz Technology
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
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%。
Abstract
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%.
刘燕德, 杜秀洋, 李斌, 胡军, 吴建, 郑艺蕾. 基于太赫兹技术的葛粉中苯甲酸的检测[J]. 激光与光电子学进展, 2019, 56(4): 041101. Yande Liu, Xiuyang Du, Bin Li, Jun Hu, Jian Wu, Yilei Zheng. Detection of Benzoic Acid in Arrowroot by Terahertz Technology[J]. Laser & Optoelectronics Progress, 2019, 56(4): 041101.