Abstract
Mass spectrometry is a highly advanced technique capable of detecting compounds on the basis of the mass-to-charge ratio of the ions generated from the compounds. This technique is highly sensitive and provides an accurate and reliable estimation of different compounds, especially in the field of forensic science. Apart from providing information regarding molecular weight, it is also capable of providing elemental information as well. In forensic science, it has been used for the analysis of biological samples, the examination of drugs and foods, explosives and gunshot residue analysis, fiber analysis, detection of inks in questionable documents, and the investigation of oil spills and petroleum products. Such applications of mass spectrometry in forensic science along with the theory and instrumentation of this technique are discussed in this chapter.
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