摘要
采用太赫兹时域光谱(THz-TDS)对不同质量比例的环己基氨基磺酸钠和小麦粉混合物进行测量,获得了混合样品在02.～15.THz波段的时域光谱、频率域谱、折射率谱和吸收谱.实验发现,环己基氨基磺酸钠在08.49THz处有明显的特征吸收峰,可用于物质成分识别.分析表明,吸收峰的吸收系数与环己基氨基磺酸钠含量存在良好的线性关系,相关系数可达09.723.本文研究结果可为研发快速、定量、无损的食品质量安全检测设备提供理论基础.
Terahertz time-domain spectroscopy(THz-TDS)was used to measure the mixture of sodium N-cyclohexylsulfamate and wheat flour with different mass ratios.The time-domain spectra,frequency-domain spectra,refractive index spectra and absorption spectra of the mixed samples were obtained at 0.2-1.5 THz.It is found that sodium N-cyclohexylsulfamate display a distinct characteristic absorption peak at 0.849 THz,which can be used for material composition identification.There is a good linear relationship between the absorption coefficient of the absorption peak and the content of sodium N-cyclohexylsulfamate in the sample and the correlation coefficient can reach 0.972 3.The results will provide a theoretical basis for developing fast,quantitative and non-destructive testing equipment for food quality and safety.
作者
宋骆林
林振衡
李响
黄永华
SONG Luolin;LIN Zhenheng;LI Xiang;HUANG Yonghua(School of Mechanical and Electrical Engineering,Putian University,Putian 351100,China;Key Laboratory of Modern Precision Measurement and Laser Nondestructive Testing,Universities of Fujian Province,Putian 351100,China)
出处
《延边大学学报（自然科学版）》
CAS
2018年第4期356-360,共5页
Journal of Yanbian University（Natural Science Edition）
基金
福建省自然科学基金资助项目(2018J01557)
福建省激光精密加工工程技术研究中心开放基金资助项目(2016JZA007)
福建省教育厅A类科技一般项目(JAT160439
JAT170522)
莆田学院校内项目(2016018)
关键词
环己基氨基磺酸钠
太赫兹波
吸收系数
食品安全
sodium N-cyclohexylsulfamate
THz wave
absorption coefficient
food security
