Elemental analysis is a scientific technique used to determine the composition of a substance by identifying and quantifying its elemental constituents. This process is essential in various fields, including chemistry, environmental science, and materials science, as it helps researchers understand the material's properties and potential applications. The analysis can be performed using various methods, such as mass spectrometry, atomic absorption spectroscopy, and X-ray fluorescence. Each technique has its advantages and is chosen based on the specific requirements of the analysis, such as sensitivity, accuracy, and the type of sample being studied.