An FTIR (Fourier Transform Infrared) spectrum is a graph that shows the absorption of infrared radiation by a sample. It is obtained by passing infrared light through a sample and measuring the amount of light absorbed at different wavelengths using a Fourier transform infrared (FTIR) spectrometer.
An FTIR spectrum can provide information about the functional groups present in a sample, as well as the chemical bonds and molecular structure. It can also be used to identify specific compounds or substances present in a sample.
Interpretation of an FTIR spectrum involves analyzing the peaks and valleys on the graph, which correspond to the absorption of infrared light at different wavelengths. The location and intensity of these peaks can provide information about the type and number of functional groups present in the sample.
The interpretation of an FTIR spectrum can be affected by a number of factors, including the sample preparation method, the type of sample (solid, liquid, or gas), and the instrument settings. It is also important to consider the background noise and baseline correction when interpreting the spectrum.
FTIR spectroscopy is widely used in various industries and fields, such as pharmaceuticals, food and beverage, environmental science, and forensics. It can be used for quality control, product development, and identification of unknown substances. In research, FTIR is used for chemical analysis, material characterization, and studying chemical reactions.