What is mass spectrometry used to identify?

Mass spectrometry is primarily used to identify the chemical composition of substances. This analytical technique allows scientists to determine the precise mass-to-charge ratio of ions, providing valuable information about the elemental composition and isotopic abundance of molecules. By analyzing the mass spectra produced, researchers can deduce the molecular formula and identify specific compounds present in a sample. Mass spectrometry is widely employed in various fields, including chemistry, biochemistry, environmental science, forensics, and pharmaceuticals, for its unparalleled ability to elucidate the composition and structure of complex substances.