Quasi-molecular ion: Difference between revisions
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A term used to represent a [[protonated molecule]] or an ion formed from a [[molecular ion]] by loss of a hydrogen atom. | A term used to represent a [[protonated molecule]] or an ion formed from a [[molecular ion]] by loss of a hydrogen atom. | ||
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{{ext}}10.1002/jms.4700 "The term quasimolecular ion has been used to describe ions comprising a molecule and weakly bound positive or negative ion or an ion formed by the loss of a proton from a molecule. This term was used in mass spectrometry from the late 1960s after the development of chemical ionization but has been deprecated in recent terms recommendations due to what is perceived as its overly broad use. This letter argues that the term is well-defined and has a long history of use in mass spectrometry and other fields and should be considered as a recommended term." |
Latest revision as of 13:23, 22 March 2021
IUPAC RECOMMENDATIONS 2013 |
Quasi-molecular ion |
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This term is deprecated. |
Related Term(s): protonated molecule |
Reference(s): |
From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013. |
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). |
Quasi-molecular ion |
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http://goldbook.iupac.org/Q05000.html A protonated molecule or an ion formed from a molecular ion by loss of a hydrogen atom. The use of the term 'pseudo-molecular ion' is not recommended. Source: PAC, 1991, 63, 1541 (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)) on page 1550 |
IUPAC Gold Book |
Index of Gold Book Terms |
Orange Book
ORANGE BOOK DEFINITION
IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979 (see also Orange Book 2023) |
Quasi-molecular ion |
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A term used to represent a protonated molecule or an ion formed from a molecular ion by loss of a hydrogen atom. |
IUPAC 1997 Orange Book Chapter 12 |
Index of Orange Book Terms |
External links
- http://dx.doi.org/10.1002/jms.4700 "The term quasimolecular ion has been used to describe ions comprising a molecule and weakly bound positive or negative ion or an ion formed by the loss of a proton from a molecule. This term was used in mass spectrometry from the late 1960s after the development of chemical ionization but has been deprecated in recent terms recommendations due to what is perceived as its overly broad use. This letter argues that the term is well-defined and has a long history of use in mass spectrometry and other fields and should be considered as a recommended term."