What is IR spectroscopy?

1 Answer


IR spectroscopy exploits the interaction between infrared light (radiation) and matter (molecules) to measure the atoms' vibrations.

The analysis is executed in three ways of measurement: absorption, emission and reflection. Absorption spectroscopy is the most common type.

Many chemists perform this method to determine functional groups in molecules, particularly organic molecules. They use an infrared spectrometer (or spectrophotometer).

The energy (in the form of radiation) in an absorption spectrum is proportional to the vibration frequency of the sample.