Monoisotopic
Encyclopedia
- Monoisotopic massMonoisotopic massThe monoisotopic mass is the sum of the masses of the atoms in a molecule using the unbound, ground-state, rest mass of the principal isotope for each element instead of the isotopic average mass. For typical organic compounds, where the monoisotopic mass is most commonly used, this also results...
is a term from mass spectrometryMass spectrometryMass spectrometry is an analytical technique that measures the mass-to-charge ratio of charged particles.It is used for determining masses of particles, for determining the elemental composition of a sample or molecule, and for elucidating the chemical structures of molecules, such as peptides and...
, and usually refers to the atomic weight of a molecule calculated using (for each element) the atomic weight of the most naturally abundant isotope of that element.
- Monoisotopic elementMonoisotopic elementA monoisotopic element is one of 26 chemical elements which have only a single stable isotope . A list is given in a following section....
is one of the 26 chemical elements which have only one stable isotope.