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ppm in mass spectrometry

ppm in mass spectrometry - Protocols and Methods Forum

ppm in mass spectrometry - Post Any Protocol, Method, Technique, Procedure or Tips / Troubleshooting for any Molecular Biology Technique.


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  #1  
Old 10-23-2008, 04:39 PM
Esmaeil Sadroddiny
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Default ppm in mass spectrometry



Can somebody explain simple definition from ppm in mass spectrometry

Regards
Esmaeil



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  #2  
Old 10-24-2008, 11:33 AM
Han
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Default ppm in mass spectrometry

Esmaeil Sadroddiny <[Only registered users see links. ]> wrote in
news:[Only registered users see links. ]. net:

p parts
p per
m million

Usually weight/weight, AFAIK
--
Best regards
Han
email address is invalid
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  #3  
Old 10-26-2008, 05:31 PM
Dr Engelbert Buxbaum
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Default ppm in mass spectrometry

Am 23.10.2008, 12:39 Uhr, schrieb Esmaeil Sadroddiny
<[Only registered users see links. ]>:


Are you sure you are talking about MS? ppm usually occurs in the context
of nuclear magnetic resonance (NMR) spectroscopy where it denotes the
chemical shift of a signal with respect to some reference compound. I.e.,
if the reference signal is at 400 MHz, a 1 ppm signal would be at 400.0004
MHz.
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Old 05-14-2010, 05:36 PM
Pipette Filler
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Default Re: ppm in mass spectrometry

can sombody help with converting cubic centimeters to ppb or is that even possible?
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Old 05-14-2010, 05:37 PM
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