Difference between revisions of "M/z"

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== [[Orange Book]] Entry ==
 
== [[Orange Book]] Entry ==
 
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Z{{orange|
 
''[[m/z]]'' ratio.
 
''[[m/z]]'' ratio.
 
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}}
 
== [[Gold Book]] Entry ==
 
== [[Gold Book]] Entry ==
 
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{{gold|
 
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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== Related Terms ==
 
== Related Terms ==

Revision as of 02:39, 12 July 2009

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See additional comments on the M/z discussion page (archive of discussion between 2004 and 2006)


Orange Book Entry

Z====Orange Book====

ORANGE BOOK DEFINITION

IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979.

M/z

m/z ratio.

IUPAC 1997 Orange Book Chapter 12
Index of Orange Book Terms

Gold Book Entry

Gold Book

GOLD BOOK DEFINITION

IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997).

M/z

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.

IUPAC Gold Book
Index of Gold Book Terms


Related Terms


External Links

Wikipedia:Mass-to-charge_ratio