Resolution: peak width definition: Difference between revisions
From Mass Spec Terms
No edit summary |
No edit summary |
||
| Line 2: | Line 2: | ||
For a single peak made up of singly charged ions at mass m in a [[Mass Spectrum|mass spectrum]], the resolution may be expressed as m / ??????????????????????m, where ??????????????????????m is the width of the peak at a height which is a specified fraction of the maximum peak height. It is recommended that one of three values 50%, 5% or 0.5% should always be used. (Note that for an isolated symmetrical peak recorded with a system which is linear in the range between 5% and 10% levels of the peak, the 5% peak width definition is equivalent to the 10% valley definition. A common standard is the definition of resolution based upon ??????????????????????m being Full Width of the peak at Half its Maximum (FWHM) height. | For a single peak made up of singly charged ions at mass m in a [[Mass Spectrum|mass spectrum]], the resolution may be expressed as m / ??????????????????????m, where ??????????????????????m is the width of the peak at a height which is a specified fraction of the maximum peak height. It is recommended that one of three values 50%, 5% or 0.5% should always be used. (Note that for an isolated symmetrical peak recorded with a system which is linear in the range between 5% and 10% levels of the peak, the 5% peak width definition is equivalent to the 10% valley definition. A common standard is the definition of resolution based upon ??????????????????????m being Full Width of the peak at Half its Maximum (FWHM) height. | ||
Revision as of 17:51, 14 January 2005
Orange Book Entry
For a single peak made up of singly charged ions at mass m in a mass spectrum, the resolution may be expressed as m / ??????????????????????m, where ??????????????????????m is the width of the peak at a height which is a specified fraction of the maximum peak height. It is recommended that one of three values 50%, 5% or 0.5% should always be used. (Note that for an isolated symmetrical peak recorded with a system which is linear in the range between 5% and 10% levels of the peak, the 5% peak width definition is equivalent to the 10% valley definition. A common standard is the definition of resolution based upon ??????????????????????m being Full Width of the peak at Half its Maximum (FWHM) height.
