Mass/charge Ratio: Difference between revisions

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== [[Orange Book]] Entry ==
== [[Orange Book]] Entry ==


''m/z'' ratio.
'[['m/z]]'' ratio.




== [[Gold Book]] Entry ==
== [[Gold Book]] Entry ==


The abbreviation ''m/z'' is used to denote the dimensionless quantity formed by dividing the mass number of an ion by its charge number. It has long been called the [[mass-to-charge ratio]] although m is not the ionic mass nor is z a multiple or the elementary (electronic) charge, e. The abbreviation m/e is, therefore, not recommended. Thus, for example, for the ion C<sub>7</sub>H<sub>7</sub><sup>2+</sup>, ''m/z'' equals 45.5..
The abbreviation ''m/z'' is used to denote the dimensionless quantity formed by dividing the [[mass number]] of an ion by its [[charge number]]. It has long been called the [[mass-to-charge ratio]] although m is not the ionic mass nor is z a multiple or the elementary (electronic) charge, e. The abbreviation [[m/e]] is, therefore, not recommended. Thus, for example, for the ion C<sub>7</sub>H<sub>7</sub><sup>2+</sup>, ''[[m/z]]'' equals 45.5..





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Orange Book Entry

''m/z ratio.


Gold Book Entry

The abbreviation m/z is used to denote the dimensionless quantity formed by dividing the mass number of an ion by its charge number. It has long been called the mass-to-charge ratio although m is not the ionic mass nor is z a multiple or the elementary (electronic) charge, e. The abbreviation m/e is, therefore, not recommended. Thus, for example, for the ion C7H72+, m/z equals 45.5..


Related Terms

Mass