Difference between revisions of "Template:Resolution controversy"

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:Reiner Westermeier, Tom Naven, Hans-Rudolf H??pker, Wiley, 2008, ISBN 3527319417
 
:Reiner Westermeier, Tom Naven, Hans-Rudolf H??pker, Wiley, 2008, ISBN 3527319417
  
===Other IUPAC definitions of resolution==
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===Other IUPAC definitions of resolution===
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{{gold|
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http://goldbook.iupac.org/R05319.html
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'''resolution (in optical spectroscopy)'''
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Wavenumber, wavelength or frequency difference of two still distinguishable lines in a spectrum.
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Source: [[Green Book]], 2nd ed., p. 31
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}}
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{{gold|http://goldbook.iupac.org/P04465.html
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'''peak resolution''', ''R<sub>s</sub>'' '''(in chromatography)'''
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The separation of two peaks in terms of their average peak width at base (t R2 > t R1):
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:R s &#61; t R2 ? t R1 w b1 + w b2 2 &#61; 2 ( t R2 ? t R1 ) w b1 + w b2
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In the case of two adjacent peaks it may be assumed that w b1 ? w b2, and thus, the width of the second peak may be substituted for the average value:
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:R s &#61; t R2 ? t R1 w b2
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Source: PAC, 1993, 65, 819 (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 847
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Orange Book, p. 108
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{{gold|
 
{{gold|
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A characteristic of the separation of two adjacent peaks. It may be expressed according to the equation:
 
A characteristic of the separation of two adjacent peaks. It may be expressed according to the equation:
  
:R<sub>AB</sub> &#61; 2(&#124;d<sub>R</sub>(B)?d<sub>R</sub>(A)&#124;)/(&#124;w<sub>B</sub>+ w<sub>A</sub>&#124;)
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:R<sub>AB</sub> &#61; 2(&#124;d<sub>R</sub>(B)-d<sub>R</sub>(A)&#124;)/(&#124;w<sub>B</sub>+ w<sub>A</sub>&#124;)
  
 
where R<sub>AB</sub> is the resolution, d<sub>R</sub> (A) and d<sub>R</sub> (B) are the retention distances (time or volume) of each eluted component A and B, and w<sub>A</sub> and w<sub>B</sub> are the respective widths of each peak at its base.  
 
where R<sub>AB</sub> is the resolution, d<sub>R</sub> (A) and d<sub>R</sub> (B) are the retention distances (time or volume) of each eluted component A and B, and w<sub>A</sub> and w<sub>B</sub> are the respective widths of each peak at its base.  
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PAC, 1990, 62, 2167 (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2211
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{{gold|http://goldbook.iupac.org/E02113.html
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'''energy resolution (in radiochemistry)'''
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A measurement, at given energy, of the smallest difference between the energies of two particles or photons capable of being distinguished by a radiation spectrometer.
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Source: PAC, 1994, 66, 2513 (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2519
 
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Revision as of 13:59, 19 June 2013