Infrared spectroscopy is analyzing the infrared light which interacts with a molecule. Infrared spectroscopy can be done in three ways- by measuring the absorption, the emission and the reflection. Infrared light has a wave number that ranges from the 130000- 10 cm-1.
Infrared spectrum can be obtained by passing the light through the sample and measuring the absorbed transmissions if the light at each of the frequencies. The peaks of the infrared spectrum denote the frequency of the absorbed radiation.
Infrared spectroscopy is also known as the Vibrational spectroscopy. It has various uses in various fields like it can identify and analyse the pigments used in painting (like illustrated manuscript) and other art copies.
With the advent of technology and the implementation of computers for analyzing data, the samples of the solution can also be measured with precision and accuracy.
USES OF INFRARED SPECTROSCOPY
- The primary use of the technique lies in the organic and the inorganic chemistry.
- Chemists make use of the infrared spectroscopy for finding the functional groups in the molecules.
- It is also used for measuring the vibrations caused by the atoms. This makes it easier to determine the locations of the functional groups. The light atoms with stronger bonds have a high stretching frequency for vibration.
- Infrared spectroscopy studies the interaction of the matter with the infrared light which can be used for identifying the unknown materials- quality examination of the sample and even finding out the compounds used in the mixture.
- It can be used to examine the sample is every phase like solid, liquid or gas. It can also be used alone or another set of instruments can be used for trying out different sampling processes.
- Infrared spectroscopy can be used to the identifying the substance and give it a structure.
- Infrared spectrography can be used in the forensic analysis of the civil as well as the criminal cases. It also helps in determining the alcohol level present in the blood stream of the drunk driver.
EXAMPLE OF THE USES OF SPECTROGRAPHY
The unattended long term carbon dioxide concentrations in the greenhouses can be monitored by using the infrared spectrography. It helps in controlling the quality and also helps in the dynamic measurement.
Infrared spectrography is used in the devices which detect the gas leakage like DP-IR and even EyeCGAs. This also enables detection of the leaking of hydrocarbon gases in transporting the natural gas.