中南大学学报（自然科学版）2012，Vol.43Issue(8)：3080-3084,5.
基于THz时域光谱技术的水果杀菌剂农药检测与鉴别
Application of terahertz time-domain spectrum in fruits and bactericide mixtures detection and classification
摘要
Abstract
Three kinds of fruits (banana, mango, orange) and triabendazole mixtures were measured by terahertz time-domain spectroscopy (THz-TDS) to obtain their terahertz spectrum in the frequency range 0.2-1.5 THz. The absorption coefficient and refractive index of samples were calculated. The spectroscopy characteristics in THz wave range were presented. Terahertz spectroscopy variation rules of different content of fruits and thiabendazole were concluded. The experimental results show that the absorption spectrum features of samples are different. According to the cluster analysis result using the derivative absorption spectra of three kinds of samples as feature vector for principal component analysis (PCA) , the rate of correct classification of mixture of fruit and bactericide is nearly 100%.关键词
太赫兹时域光谱/水果/杀菌剂/聚类分析Key words
terahertz time domain spectrum/fruit/bacterium/cluster analysis分类
数理科学引用本文复制引用
王强,王孝伟,马冶浩..基于THz时域光谱技术的水果杀菌剂农药检测与鉴别[J].中南大学学报（自然科学版）,2012,43(8):3080-3084,5.基金项目
国家自然科学基金资助项目(60902095) （60902095）
国家公益性质检行业科研专项资助项目(200910181) （200910181）
