Final answer:
Experts use methods such as UV-Vis and FTIR for comparing spectral analysis and GCMS to convert substances into gas for analysis. These techniques play a crucial role in verifying the nature of a substance as a controlled substance and distinguishing it from potential look-alike materials.
Step-by-step explanation:
In the field of substance analysis, experts employ methods such as UV-Vis and FTIR for comparing spectral analysis and GCMS to convert substances into gas for analysis.
UV-Vis spectroscopy is used to measure the absorption of ultraviolet and visible light by a substance. It helps in identifying the presence or absence of certain functional groups in the molecule. FTIR spectroscopy, on the other hand, uses infrared radiation to study molecular vibrations and provides information about the chemical bonds present in a substance.
Gas chromatography-mass spectrometry (GCMS) is a powerful technique used to analyze and identify substances. It involves separating a mixture of substances using gas chromatography and then ionizing and detecting the separated components using mass spectrometry. GCMS can be used to determine the nature of a substance as a controlled substance and distinguish it from potential look-alike materials based on their unique spectral patterns.