Nuclear Magnetic Resonance(NMR) NMR is a common term in spectroscopy. It has been applied in many fields, including medicine and analytical chemistry. The main elements that constitute the definition of NMR include a magnetic field (strong and stationary) and an oscillating magnetic field (Pell et al., 2019). The interaction of the two magnetic fields perturbs the stationary field causing it to respond by producing an electromagnetic signal. This phenomenon is based on the selective absorption principle that has found application in the separation of elements in analytical chemistry. NMR History In 1938, Columbia University’s I. I. Rabi used magnetic resonance absorption of molecular beams to accurately detect nuclear magnetic moments (and was awarded the Nobel Prize in Physics in 1944 for his work). NMR was born in 1946 when F. Block and E. M. Purcell successfully showed it in condensed matter (and shared the Nobel Prize in Physics in 1952). In 1950, scientists discovered that the chemical bonding status of atoms caused minor changes in the atomic nucleus Larmor frequencies (chemical shift and spin coupling). Thus, nuclear magnetic resonance (NMR) spectroscopy was conceived as a way to examine and identify materials using nuclear magnetic resonance (NMR) (Brunner & Rauche, 2020). NMR Instrument Composition NMR measurements are made in the spectrometer when the radio-frequency waves are received and transmitted. Lastly, the superconducting magnet plays the role of magnetic field generation. The magnetic field generated here is estimated to be thousands of times stronger than the Earth’s magnetic field. The test samples are placed in this field whereby they interact with radio waves which are now received by the spectrometer for measurement. In essence, the spectrometer contains a receiver and a transmitter. In spectroscopy, a sweep generator may be used to produce a magnetic field equal to that passed through the sample (Webb, 2021). Principles Of NMR Unpaired nuclei operate like small magnets, and a strong magnetic field exerts a force that causes them to process in a way that the axes of spinning tops trace out cone-shaped surfaces. Their precession in the Earth’s gravitational field is likened to that of spinning tops (Pell et al., 2019). The principle of operation can be summarized as: Nuclei have spin and are electrically charged, according to NMR’s basic premise. A radio frequency wavelength is used to transfer energy, and when the spin returns to its initial level, energy at the same frequency is emitted (Pellet al., 2019). Information Gained From NMR Spectra After analysis, the spectrum observed can be used to generate different qualitative and quantitative details. Depending on the application, these values allow a user to determine their next steps (Pell et al., 2019). The information can be classified into chemical shift, relaxation time, spin-spin coupling constant, and the signal intensity. NMR Application Fields In quality control, NMR is a chemical analytical tool. A sample’s molecular structure and composition can be determined using this technique. It is possible to use NMR to quantify mixtures containing known substances. Chemists regularly employ MR spectroscopy to investigate chemical structure by means of one-dimensional methods