Forward library search: Difference between revisions

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A procedure of comparing a mass spectrum of an unknown compound with a mass spectral library so that the unknown spectrum is compared in turn with the library spectra, considering only all the ''[[m/z]]'' peaks observed to have significant intensity in the unknown.
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|def=Procedure of comparing a [[mass spectrum]] of an unknown compound with a mass spectral library so that the unknown spectrum is compared in turn with the library spectra, considering only the ''[[m/z]]'' peaks that have intensities greater than a specific threshold in the unknown.  
 
:''Note:'' In a forward library search , a higher similarity index indicates the extent to which the library spectrum resembles the unknown spectrum. See also reverse library search.
{{jchrom|
|rel=[[reverse library search]]
The process of comparing the mass spectrum of an unknown compound with spectra in a [[mass spectral library]], considering only the [[m/z]] peaks that have intensities greater than a specific threshold in the unknown.
|ref=D. H. Smith, W. J. Yeager, T. C. Rindfleisch. Anal. Chem. 50, 1585 (1978). (http://dx.doi.org/10.1021/ac50033a050 )
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#F.P. Abramson, Anal. Chem. 47 (1975) 45.
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Latest revision as of 13:44, 21 March 2014

IUPAC RECOMMENDATIONS 2013
Forward library search
Procedure of comparing a mass spectrum of an unknown compound with a mass spectral library so that the unknown spectrum is compared in turn with the library spectra, considering only the m/z peaks that have intensities greater than a specific threshold in the unknown.
Note: In a forward library search , a higher similarity index indicates the extent to which the library spectrum resembles the unknown spectrum. See also reverse library search.
Related Term(s): reverse library search
Reference(s):

D. H. Smith, W. J. Yeager, T. C. Rindfleisch. Anal. Chem. 50, 1585 (1978). (http://dx.doi.org/10.1021/ac50033a050 )

From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

Index of Recommended Terms