Mass Spectrometry
Mass Spec Calculate Molecular Mass
Sample e
gun tue ion molecularion
molecularmasse spectrometer E detect m le ratio
Process
Stages I Ionisation
x4 Sample vapourised gaseousatoms
e
gun e beam hit atoms
Atoms lose Ix e Unipositive ions
T unstable exist forttime
N By Assume allions unite
formonly ltions
é
gun energy set
2 Acceleration
a e field acceleratetue ions A speeds
Particles must be ionised Charged Accelerate
Dex
3 Deflection sameycharge
Magnetic electricfield deflections me force
Samedeflection force on all pions
Deflection Radius dep mass chargeratio
Assume same charge T'mass t deflection t radius
h mass A deflection t radius
Pathdep I mass 2 Charge MIZ
I Detection
Electrometer photographic detection
Trends Same m z same path
Separationof tions dep on mass
, 1 Ion Source 2 Analyser 3 Detector
Mass Spec Calculate Molecular Mass
Sample e
gun tue ion molecularion
molecularmasse spectrometer E detect m le ratio
Process
Stages I Ionisation
x4 Sample vapourised gaseousatoms
e
gun e beam hit atoms
Atoms lose Ix e Unipositive ions
T unstable exist forttime
N By Assume allions unite
formonly ltions
é
gun energy set
2 Acceleration
a e field acceleratetue ions A speeds
Particles must be ionised Charged Accelerate
Dex
3 Deflection sameycharge
Magnetic electricfield deflections me force
Samedeflection force on all pions
Deflection Radius dep mass chargeratio
Assume same charge T'mass t deflection t radius
h mass A deflection t radius
Pathdep I mass 2 Charge MIZ
I Detection
Electrometer photographic detection
Trends Same m z same path
Separationof tions dep on mass
, 1 Ion Source 2 Analyser 3 Detector
