# 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== | + | ===Other IUPAC definitions of resolution=== |

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+ | {{gold| | ||

+ | 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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+ | {{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 = t R2 ? t R1 w b1 + w b2 2 = 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 = t R2 ? t R1 w b2 | ||

+ | |||

+ | Source: PAC, 1993, 65, 819 (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 847 | ||

+ | |||

+ | Orange Book, p. 108 | ||

+ | }} | ||

{{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> = 2(|d<sub>R</sub>(B) | + | :R<sub>AB</sub> = 2(|d<sub>R</sub>(B)-d<sub>R</sub>(A)|)/(|w<sub>B</sub>+ w<sub>A</sub>|) |

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. | ||

+ | |||

+ | 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 | ||

}} | }} |