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== Mass Spectrometry Glossaries ==
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==Frequently asked questions==
;Where can I get a PDF copy of the mass spectrometry terms document?
:The document can be found here: http://pac.iupac.org/publications/pac/85/7/1515/
 
;Can I republish the document contents?
:Contents of the document can be reproduced as long as IUPAC is acknowledged and the source is referenced and linked: "''Republication or reproduction of [http://pac.iupac.org/publications/pac/85/7/1515/ this report] or its storage and/or dissemination by electronic means is permitted without the need for formal IUPAC permission on condition that an acknowledgment, with full reference to the source, along with use of the copyright symbol ��, the name IUPAC, and the year of publication, are prominently visible. Publication of a translation into another language is subject to the additional condition of prior approval from the relevant IUPAC National Adhering Organization.''"
 
;What was the IUPAC project that supported this work?
:It was [http://www.iupac.org/nc/home/projects/project-db/project-details.html?tx_wfqbe_pi1[project_nr]=2003-056-2-500 Project 2003-056-2-500] "Standard definitions of terms relating to mass spectrometry". The planned duration was 2003���2006; the project was completed in the summer of 2013.
 
;Before this, what was the most recent set of recommendations for mass spectrometry terms?
:The last IUPAC mass spectrometry recommendations were published in [http://dx.doi.org/10.1351/pac199163101541 1991].
 
;These definitions are locked in until 2035 then?
:No. The complete list of mass spectrometry terms should be updated every 5 to 10 years through community discussion and peer review as it had been prior to 1991. Individual terms, particularly contentious ones (e.g. [[resolution]]/[[resolving power]], [[slashes and hyphens]], [[CAD]]/[[CID]]), should be discussed and consensus definitions should be published in the peer-reviewed literature in the interim.
 
;Were the definitions presented for public comment?
:The terms were presented for public comment at the International Mass Spectrometry Conference, Edinburgh, September 2003; American Society for Mass Spectrometry Conference, Nashville, May 2004; British Mass Spectrometry Society Meeting, September 2005; American Chemical Society Conference, San Diego, March 2005; American Society for Mass Spectrometry Conference, San Antonio, June 2005; World Chemical Congress, Beijing, China, August, 2005; British Mass Spectrometry Society Meeting, September 2005; American Society for Mass Spectrometry Conference, Seattle, May 2006; and the International Mass Spectrometry Conference, Prague, August 2006. This website has been up since December 2003 and an e-mail listserver, [[MSTerms-L]], was up from 2004���2006.
 
;Were the definitions peer reviewed?
:The manuscript was reviewed in nine drafts and received sixty individual reviews between initial submission in April of 2006 and acceptance in March of 2013.
 
;I found a definition of a term and I think that it is incorrect; what do I do?
:If you are convinced that a particular term is not correct, write a letter to the editor of a mass spectrometry journal or submit a short article with your new or modified definition(s) and rationale. Suitable references will strengthen your argument. Examples of short articles or letters to the editor on terminology can be found here: [http://dx.doi.org/10.1002/bms.1200111109 ], [http://onlinelibrary.wiley.com/doi/10.1002/rcm.5129/abstract], [http://dx.doi.org/10.1016/1044-0305(91)80026-4], [http://dx.doi.org/10.1016/1044-0305(92)87078-D], [http://dx.doi.org/10.1002/rcm.1290050210], [http://dx.doi.org/10.1002/oms.1210020302] Additionally, IUPAC supports projects aimed at definitions of specific terms, for example the definition of the hydrogen bond.[http://iupac.org/nc/home/projects/project-db/project-details.html?tx_wfqbe_pi1[project_nr]=2004-026-2-100] See the IUPAC "Project Submission and Approval Process" page.[http://www.iupac.org/home/projects/project-submission-and-approval-process.html]
 
;You didn't include my favorite term; what do I do?
:See above. Write a letter to the editor with your new term and definition.
 
;How do I label the x-axis of a [[mass spectrum]]? And what are the units?
:Use ''[[m/z]]'' and it is dimensionless and it is an abbreviation, not a symbol. Do not use m/z([[Da]]), m/z([[u]]), m/e, and especially not m/z([[amu]]). The [[thomson]] unit is not recommended.
 
;Is [[mass resolution]] Δm or m/Δm?
:The recommendations document retains the Gold Book definition m/Δm for resolution.[http://goldbook.iupac.org/R05318.html] There is considerable division regarding m/Δm vs. Δm and resolution vs. resolving power but the project task group found insufficient support for an alternative to the current Gold Book definition. Individuals pushing for a "Δm is resolution and m/Δm is resolving power" paradigm (or any alternative set of definitions) must work to achieve consensus on their definition, for example through an IUPAC project specifically for that term. 
 
;What about resolving power?
:See [[resolving power]] and the comments above on [[mass resolution]].
 
;When to use [[slashes and hyphens]] for combined methods? Is it [[GC/MS]] or [[GC-MS]], [[LC/MS]] or [[LC-MS]], etc?
:The current recommendation is to use either.
 
;Is it [[collision-induced dissociation]] (CID) and [[collisionally activated dissociation]] (CAD)?
:The current recommendation is to use either and that they are synonyms.
 
;Should I use the term [[daughter ion]]?
:Use [[product ion]] instead (also [[precursor ion]] not [[parent ion]]).
 
;Is [[ion-molecule reaction]] correct?
:No, use the slash: [[ion/molecule reaction]].
 
;Is [[TIC]] the recommended abbreviation for [[total ion current]] or [[total ion chromatogram]]?
:Use TIC for total ion current - use [[total ion current chromatogram]] ([[TICC]]) for the latter.
 
;Is [[MRM]] recommended?
:Yes, this was changed from an earlier recommendation. See [[multiple reaction monitoring]], [[selected reaction monitoring]], and [[consecutive reaction monitoring]].
 
;Are new terms being added?
:Yes. Draft definitions are [[:Category:Draft definition|here]]. These are terms that were considered for the 2013 document or have been added after 2013. Terms that have been considered, but have no definition are [[:Category:Stub|here]]. For questions, comments, or suggestions for this site contact [http://chemistry.lsu.edu/People/Faculty/Kermit%20Murray/item1096.html Kermit Murray].
 
==Other mass spectrometry term compilations ==
 
*'''IUPAC [[Gold Book]]
 
*'''IUPAC [[Orange Book]] Chapter 12'''
 
*'''Murray, K. K''', "[http://dx.doi.org/10.1016/j.chroma.2010.03.013 Glossary of terms for separations coupled to mass spectrometry]" J. Chrom. A, '''2010''', ''1217'', 3922���3928.
 
*'''Todd, J. F. J.''', "[http://www.iupac.org/publications/pac/63/10/1541/ Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)]" ''Pure Appl. Chem.'' '''1991''', ''63'', 1541-1566.
 
*'''Price, P'''., "[http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TH2-44WK8J2-2H&_user=3787556&_coverDate=08%2F31%2F1991&_rdoc=9&_fmt=high&_orig=browse&_srch=doc-info(%23toc%235270%231991%23999979995%23280906%23FLP%23display%23Volume)&_cdi=5270&_sort=d&_docanchor=&_ct=12&_acct=C000061383&_version=1&_urlVersion=0&_userid=3787556&md5=9ca9c1b31784d34eced1bbde5a38632d Standard Definitions of Terms Relating to Mass Spectrometry : A report from the Committee on Measurements and Standards of the American Society for Mass Spectrometry] ''J. Am. Soc. Mass Spectrom.'' '''1991''', ''2'', 336-48.
 
*'''1997''' [[ASMS Terms and Definitions Poster]]
 
*'''Beynon, J.''' "[http://www.iupac.org/publications/pac/1978/pdf/5001x0065.pdf Recommendations for Symbolism and Nomenclature for Mass Spectroscopy]" Pure Appl. Chem. '''1978''', ''50'', 65���73.
 
*'''Budzikiewicz, H.''' "[http://onlinelibrary.wiley.com/doi/10.1002/oms.1210020302/abstract Suggestions for the use of symbols and abbreviations in papers dealing with topics in Organic Mass Spectrometry]" Org. Mass. Spectrom. '''1969''', ''1'', 249���252.
 
*'''Robertson, A. J. B.''' "[http://www.iupac.org/publications/pac/37/4/0469/ Recommendations for nomenclature of mass spectrometry]" Pure Appl. Chem. '''1974''', ''37'', 469���480.
 
== Mass Spectrometry Web Glossaries ==


[http://www.asms.org/Default.aspx?tabid=108 ASMS 'What is Mass Spectrometry?']
[http://www.asms.org/Default.aspx?tabid=108 ASMS 'What is Mass Spectrometry?']
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[http://www.bsms.be/ Belgian Society for Mass Spectrometry]
[http://www.bsms.be/ Belgian Society for Mass Spectrometry]
[http://www.brmass.sbq.org.br/ Brazilian Society for Mass Spectrometry]


[http://www.bmss.org.uk/ British Mass Spectrometry Society]
[http://www.bmss.org.uk/ British Mass Spectrometry Society]
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[http://www.bmb.leeds.ac.uk/esms/ European Society for Mass Spectrometry]
[http://www.bmb.leeds.ac.uk/esms/ European Society for Mass Spectrometry]


[http://www.sfsm.info/ French Society for Mass Spectrometry]
[http://www.kemianseura.fi/jaostot/msjaosto/ Finnish Society for Mass Spectrometry]
 
[http://www.sfsm.fr/ French Society for Mass Spectrometry]


[http://www.dgms.de/ German Society for Mass Spectrometry]
[http://www.dgms.de/ German Society for Mass Spectrometry]
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[http://dmoz.org/Science/Chemistry/Analytical/Mass_Spectrometry/ DMOZ Index]
[http://dmoz.org/Science/Chemistry/Analytical/Mass_Spectrometry/ DMOZ Index]
[http://www.spectroscopynow.com/Spy/ms/ Basepeak]


[http://www.ionsource.com/ Ion Source]
[http://www.ionsource.com/ Ion Source]
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[http://www.i-mass.com/ I-Mass]
[http://www.i-mass.com/ I-Mass]


[http://ch335c.chem.lsu.edu/resources/ms/ MS Blog]
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Latest revision as of 14:06, 16 July 2019

IUPAC Recommendations 2013 Index

Complete Index of Terms

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All terms | IUPAC 2013 | Gold Book terms | Orange Book terms | Acronyms | Deprecated terms | Obsolete terms | Draft definitions | Stub pages

Frequently asked questions

Where can I get a PDF copy of the mass spectrometry terms document?
The document can be found here: http://pac.iupac.org/publications/pac/85/7/1515/
Can I republish the document contents?
Contents of the document can be reproduced as long as IUPAC is acknowledged and the source is referenced and linked: "Republication or reproduction of this report or its storage and/or dissemination by electronic means is permitted without the need for formal IUPAC permission on condition that an acknowledgment, with full reference to the source, along with use of the copyright symbol ��, the name IUPAC, and the year of publication, are prominently visible. Publication of a translation into another language is subject to the additional condition of prior approval from the relevant IUPAC National Adhering Organization."
What was the IUPAC project that supported this work?
It was Project 2003-056-2-500 "Standard definitions of terms relating to mass spectrometry". The planned duration was 2003���2006; the project was completed in the summer of 2013.
Before this, what was the most recent set of recommendations for mass spectrometry terms?
The last IUPAC mass spectrometry recommendations were published in 1991.
These definitions are locked in until 2035 then?
No. The complete list of mass spectrometry terms should be updated every 5 to 10 years through community discussion and peer review as it had been prior to 1991. Individual terms, particularly contentious ones (e.g. resolution/resolving power, slashes and hyphens, CAD/CID), should be discussed and consensus definitions should be published in the peer-reviewed literature in the interim.
Were the definitions presented for public comment?
The terms were presented for public comment at the International Mass Spectrometry Conference, Edinburgh, September 2003; American Society for Mass Spectrometry Conference, Nashville, May 2004; British Mass Spectrometry Society Meeting, September 2005; American Chemical Society Conference, San Diego, March 2005; American Society for Mass Spectrometry Conference, San Antonio, June 2005; World Chemical Congress, Beijing, China, August, 2005; British Mass Spectrometry Society Meeting, September 2005; American Society for Mass Spectrometry Conference, Seattle, May 2006; and the International Mass Spectrometry Conference, Prague, August 2006. This website has been up since December 2003 and an e-mail listserver, MSTerms-L, was up from 2004���2006.
Were the definitions peer reviewed?
The manuscript was reviewed in nine drafts and received sixty individual reviews between initial submission in April of 2006 and acceptance in March of 2013.
I found a definition of a term and I think that it is incorrect; what do I do?
If you are convinced that a particular term is not correct, write a letter to the editor of a mass spectrometry journal or submit a short article with your new or modified definition(s) and rationale. Suitable references will strengthen your argument. Examples of short articles or letters to the editor on terminology can be found here: [1], [2], [3], [4], [5], [6] Additionally, IUPAC supports projects aimed at definitions of specific terms, for example the definition of the hydrogen bond.[7] See the IUPAC "Project Submission and Approval Process" page.[8]
You didn't include my favorite term; what do I do?
See above. Write a letter to the editor with your new term and definition.
How do I label the x-axis of a mass spectrum? And what are the units?
Use m/z and it is dimensionless and it is an abbreviation, not a symbol. Do not use m/z(Da), m/z(u), m/e, and especially not m/z(amu). The thomson unit is not recommended.
Is mass resolution Δm or m/Δm?
The recommendations document retains the Gold Book definition m/Δm for resolution.[9] There is considerable division regarding m/Δm vs. Δm and resolution vs. resolving power but the project task group found insufficient support for an alternative to the current Gold Book definition. Individuals pushing for a "Δm is resolution and m/Δm is resolving power" paradigm (or any alternative set of definitions) must work to achieve consensus on their definition, for example through an IUPAC project specifically for that term.
What about resolving power?
See resolving power and the comments above on mass resolution.
When to use slashes and hyphens for combined methods? Is it GC/MS or GC-MS, LC/MS or LC-MS, etc?
The current recommendation is to use either.
Is it collision-induced dissociation (CID) and collisionally activated dissociation (CAD)?
The current recommendation is to use either and that they are synonyms.
Should I use the term daughter ion?
Use product ion instead (also precursor ion not parent ion).
Is ion-molecule reaction correct?
No, use the slash: ion/molecule reaction.
Is TIC the recommended abbreviation for total ion current or total ion chromatogram?
Use TIC for total ion current - use total ion current chromatogram (TICC) for the latter.
Is MRM recommended?
Yes, this was changed from an earlier recommendation. See multiple reaction monitoring, selected reaction monitoring, and consecutive reaction monitoring.
Are new terms being added?
Yes. Draft definitions are here. These are terms that were considered for the 2013 document or have been added after 2013. Terms that have been considered, but have no definition are here. For questions, comments, or suggestions for this site contact Kermit Murray.

Other mass spectrometry term compilations

Mass Spectrometry Web Glossaries

ASMS 'What is Mass Spectrometry?'

Base Peak Glossary

BMSS Acronms

CalTech Terms

Genomic Glossary

LBL Glossary of Nuclear Terms

Little Encyclopedia of MS

MDS Sciex "About Mass Spectrometry"

Shimadzu Mass Spectrometry Glossary

Mass Spectrometry Societies

American Society for Mass Spectrometry

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European Society for Mass Spectrometry

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Italian Home Page for Mass Spectrometry

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Mass Spectrometry Journals

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Mass Spectrometry Revews

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