Lecture 18 Mass Spectroscopy I Harris Ch.22.
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Lecture 18 Mass Spectroscopy I Harris Ch.22
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Transcript of Lecture 18 Mass Spectroscopy I Harris Ch.22.
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Lecture 18
Mass Spectroscopy I
Harris Ch.22
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1420146.0
208_
2/1
m
mpowerresolving
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Ion Source Mass Selector Detector
Data Processing
Mass Spectrometer
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Ion Detectors
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V
+++
Energy gain: E = zV Kinetic energy2
2
mv
z
mconst
zV
mlength
v
lengthtime
m
zVv
m
zVvzV
mv
2
2
2or ,
22
2
Time-of-Flight
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Quadrupole
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Ion Cyclotron Resonance
(FT Mass Spectrometry)
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Ion Source Mass Selector Detector
Data Processing
Mass Spectrometer
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C
CC
C
CC H
H
H
H
H
H
+
+
HH
C
CC
C
CC
H
H
H
H
H
C CH
CC
C C
H
HH
H
H
C
CC
C
H
H
H
+
C C HH
Electron ionization of benzene molecule
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Electrospray
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CO OH
OH
OH
CO OH
NH2
MALDIMatrix Assisted Laser Desorption/Ionization