# Difference between revisions of "Resolution (mass spectrometry)"

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− | '''Resolution: peak width definition''', m/Δm. For a single peak made up of singly charged ions at mass m in a mass spectrum, the resolution may be expressed as m/Δm, where Am is the width of the peak at a height that is a specified fraction of the maximum peak height. It is recommended that one of three values 50%, 5%, or 0.5% be used. For an isolated symmetrical peak, recorded with a system that is linear in the range between 5% and 10% levels of the peak, the 5% width defmition is technically equivalent to the Photo-ionization. 10% valley defmition. A common standard is the definition of resolution based upon Δm being full width of the Desk at half its maximum heieht, sometimes | + | '''Resolution: peak width definition''', m/Δm. For a single peak made up of singly charged ions at mass m in a mass spectrum, the resolution may be expressed as m/Δm, where Am is the width of the peak at a height that is a specified fraction of the maximum peak height. It is recommended that one of three values 50%, 5%, or 0.5% be used. For an isolated symmetrical peak, recorded with a system that is linear in the range between 5% and 10% levels of the peak, the 5% width defmition is technically equivalent to the Photo-ionization. 10% valley defmition. A common standard is the definition of resolution based upon Δm being full width of the Desk at half its maximum heieht, sometimes abbreviated |

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+ | '''Resolving power (mass)'''. The ability to distinguish between ions differing slightly in mass-to-charge ratio. It may be characterized by giving the peak width, measured in mass units, expressed as a function of mass, for at least two points on the peak, specihcally for 50% and for 5% of the maximum peak height. | ||

==1997 ASMS Poster== | ==1997 ASMS Poster== |