Accurate mass: Difference between revisions
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{{ | {{Def2| | ||
An experimentally determined mass of an [[ion]] that is used to determine an elemental formula. For ions containing combinations of the elements C, H, N, O, P, S, and the halogens, with mass less than 200 [[u]], a measurement with 5 ppm uncertainty is sufficient to uniquely determine the elemental composition. | |||
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== Related Terms == | == Related Terms == | ||
Revision as of 15:14, 16 March 2006
Obsolete Template
Related Terms
Other Definitiions
- Isotopes have unique precise masses, a consequence of which is that the elemental composition of any molecule, or fragment of one, can be calculated from its mass if this is sufficiently accurately determined.??????????????
- Measured Accurate Mass: the experimentally determined mass that allows the elemental formula to be deduced. Not to be used to indicate the calculated mass.
