Mass spectrometry is one of the primary spectroscopic methods for molecular analysis available to organic chemists. It requires only a few nano-moles of the sample to obtain characteristic information related to the structure and molecular weight of analytical material.
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Electron spin resonance spectroscopy/ESR is a magnetic resonance technique, which is based on the interaction of unpaired electron spins with an external magnetic field. In ESR, the essential aspects are may be illustrated by considering the hypothetical case of a single isolated electron.
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NMR (Nuclear Magnetic Resonance) spectroscopy is the measurement and interpretation of the radiofrequency which induces the transitions in the nuclei by absorbing the radiofrequency waves and the spectra are known as the nuclear magnetic resonance spectra.
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Infrared spectroscopy deals with the infrared region of the electromagnetic spectrum, that is light with a longer wavelength and lower frequency than visible light. It covers a range of techniques, which is mostly based on absorption spectroscopy. It can also be used to identify and study chemicals. Its concept can generally be analyzed in three ways- by measuring reflection, emission, absorption.
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Spectroscopy is the process of the interaction of electromagnetic radiation with matter. Electromagnetic radiation is a simple harmonic wave of electric and magnetic fields fluctuating orthogonal to each other.
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