太赫兹波谱用于违法添加工业明胶的检测

Studies on Illegal Additive Industrial Gelatin Detection by Terahertz Spectroscopy

DOI：10.3969/j.issn.1673-1689.2019.11.005

中文关键词: 太赫兹波谱检测 工业明胶 特征吸收峰 定性定量

英文关键词: terahertz spectroscopy detection,industrial gelatin,characteristic absorption peak,qualitative and quantitative

基金项目:

摘要点击次数: 100

全文下载次数: 186

中文摘要:

采用太赫兹波谱技术对工业明胶进行检测，旨在对工业明胶进行定性和定量分析。发现工业明胶在太赫兹波谱下具有明显的特征吸收峰，吸收峰位置为1.55 THz，且在工业明胶比例低至1.57%时，依然有明显的吸收。选择吸收基线值低的修正胶囊样品，混以0%、50%及70%的PE粉作为基质，添加不同比例的工业明胶自制阳性样品。结果显示，PE粉含量越高的样品吸收峰越明显；工业明胶质量分数在5%以上，具有非常明显的吸收。特征吸收峰的峰高与工业明胶质量分数之间存在显著的线性关系，因此太赫兹波谱可以用于工业明胶的定性和定量分析。

英文摘要:

Terahertz spectroscopy technique was used to test industrial gelatin in order to qualitative and quantitative analysis and it was shown that characteristic absorption peak appear in absorption spectra. The characteristic absorption peak was 1.55 THz. In addition，there was significant absorbtion when the concertration of industrial gelatin was 1.57%. The lowest absorbtion baseline sample was selected as basement with 0%，50% and 70% PE powder to produce positive samples by adding different proportion industrial gelatin. The results show that there was best absorbtion peak of samples mixed with 70% PE powder due to the lowest absorbtion baseline. Moreover，there was significant absorbtion when the concertration of industrial gelatin was above 5%. There is a significant linear relationship between the peak height of characteristic absorption peak and the concentration of industrial gelatin. Therefore，terahertz spectroscopy can be used for qualitative and quantitative analysis of industrial gelatin.

查看全文 查看/发表评论 下载PDF阅读器