Application of terahertz spectroscopy to abused drug analysis

In the field of forensic chemistry, the identification of abused drugs is of great importance. In this study, we applied terahertz spectroscopy for identifying various types of abused drugs. Most of these drugs showed characteristic terahertz absorption spectra in the range of 20-100 cm/sup -1/ (0.6-3 THz), which is sufficient to differentiate them from one another.