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A mass spectrum is a plot of intensity vs. mass-to-charge ratio of ions in a chemical sample, usually acquired by a mass spectrometer. Learn about the history, notation, and interpretation of mass spectra, and how they differ for positive and negative ions.
Learn how to use mass spectra to identify organic compounds by analyzing their fragmentation patterns. Find out how to predict the peak heights, the base peak, and the stability of ions formed by electron ionization.
Using Mass Spectra to Identify Compounds. Assume that you have two unlabeled samples, one of methylcyclohexane and the other of ethylcyclopentane. How could you use mass spectrometry to tell them apart? The mass spectra of both are shown in Figure 12.8.
In the analytical technique of mass spectrometry, atoms or molecules are ionized using a high-energy electron beam and then separated based on their mass-to-charge ratios (m/z). The results are presented as a mass spectrum, which shows the relative abundances of the ions on the y-axis and their m/z ratios on the x-axis.
Learn about mass spectrometry, an analytic technique that sorts ions by mass-to-charge ratios in electric and magnetic fields. Explore its history, principle, facts, and uses in chemistry, biology, and medicine.
Learn about the history, principles, and applications of mass spectrometry, an analytical technique that measures the mass-to-charge ratio of ions. Find out how mass spectrometry is used to identify elements, isotopes, molecules, and compounds in various fields.
Learn how mass spectrometers measure the characteristics of individual molecules by converting them to ions and separating them by mass and charge. See the mass spectra of simple gaseous compounds and how they reveal their structures and fragmentations.
Learn how mass spectrometers measure the characteristics of individual molecules by converting them to ions and separating them by mass and charge. See examples of mass spectra of simple gaseous compounds and their fragmentation patterns.
Learn how to determine molecular weight and fragmentation patterns of organic compounds using mass spectrometry. See examples, exercises, and solutions with diagrams and explanations.
A good review of how mass spectrometry is used to study non-covalent complexes of proteins, DNA, DNA–drug interactions and enzyme–inhibitor interactions.