Spectroscopic methods are techniques that use the interaction between electromagnetic radiation and matter to obtain information about the properties and structure of materials. It is a specialized skill that involves the use of various instruments and techniques such as atomic absorption spectroscopy, infrared spectroscopy, ultraviolet-visible spectroscopy, and mass spectrometry. Spectroscopic methods are widely used in chemistry, physics, materials science, and many other fields to identify and characterize different molecules and compounds. It requires expertise and knowledge of the fundamental principles of spectroscopy as well as practical experience in using the relevant instruments and interpreting the data obtained from them.