V. Damian, M. Bojan, I. Lordache, P. G. Florea,
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10977/109770L/THz-TDS-application-on-detecting-organic-substances/10.1117/12.2324871.short?SSO=1
The paper presents our progress in using a THz
-TDS system for spectral characterization of some organic substances. We try to
develop a data base for substances from different domain that include in their
category materials having a common characteristic: they are dangerous or they
are even forbidden in their category of utilization. We have developed
procedures for measuring the absorption spectra in quasi same conditions for
all substances. Like this we have record absorption spectra for: food additives
(azoic-dyes and fragrance), pesticides (insecticides, fungicides, herbicides)
and some alcoholic polar substances (methanol, ethanol) etc. We have
demonstrated that our measurements technology can be used not only for
recording the spectra of the organic samples, but we can discriminate between
different levels of concentration of the substances or even we detect the
forbidden substances in an organic material.
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