利用太赫兹时域光谱系统检测水中污染物纯品

摘要

利用太赫兹时域光谱技术对22种水中污染物的纯品进行了检测,其中包括除草剂、化肥、塑化剂等。通过理论计算获得了上述样品在太赫兹波段的折射率和吸收系数。结果表面,2,4-二氯苯氧乙酸钠（2,4-D钠盐）和苯磺隆两种除草剂在太赫兹波段存在特征吸收峰,这些数据有利于应用太赫兹时域光谱技术对水中污染物进行检测和鉴别。%22 kinds of contaminations,including herbicides,fertilizers and plasticizers were measured using the terahertz time-domain spectroscopy.Refractive index and the absorption coefficient for these samples were extracted with the transmission measurement.Sodium 2,4-dichlorophenoxyacetate and tribenuron-methyl are found to have absorption fingerprints in this frequency range,which indicates that THz-TDS is a potential tool to detect contaminations in water.