中国计量学院学报2011，Vol.22Issue(2)：189-193,5.
3种苯基脲类除草剂的THz光谱特性研究
Detection technology of three kinds of phenylurea herbicides by the terahertz time-domain spectroscopy
摘要
Abstract
The terahertz time-domain spectroscopy (THz-TDS) of three kinds of phenylurea herbicides standard samples, diuron, fluometuron and chlorotoluron were measured in the frequency range.The important optical parameters of samples including refractive indices and absorption coefficients were determined.Experimental results showed that the average refractive indices of them were 1.593, 1.474 and 1.504 respectively.Furthermore, Gaussian03 software was employed for vibration frequency calculation, and there were some differences between experimental results and the THz absorption spectra of samples using the B3LYP hybrid density functional and the 6-311G(d) basis set.The DMol3 program was performed with the DNP basis set and BP generalized gradient approximation (GGA) density function.It provided good agreement with the experimental results.The THz-TDS technology is an effective scheme to distinguish the three kinds of phenylurea herbicides.关键词
太赫兹时域光谱/苯基脲类除草剂/吸收谱Key words
THz-TDS/ phenylurea herbicides/ absorption spectrum分类
数理科学引用本文复制引用
王花丽,王强,王孝伟..3种苯基脲类除草剂的THz光谱特性研究[J].中国计量学院学报,2011,22(2):189-193,5.基金项目
国家公益性质检行业科研专项(No.200910181) （No.200910181）
