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mass spectrometer (Uses (Relative atomic mass, Relative molecular mass,…
mass spectrometer
Uses
Relative atomic mass
Relative molecular mass
Relative isotopic abundance
3)
ion drift
there is no electric field now
ions drift
but lighter ions drift faster
4)
Detection
lighter ions reach detector faster
it detects mass spectrum
and charged particles
1)
2 ways of ionising
electrospray ionisation
sample pushed through small nozzle
voltage applied
H+ ions are gained
now a gas of + ions
Electron impact ionisation
sample is vaporised
electron gun used
knocks one electron off
becomes + ions
2)
Acceleration
Put in electric field
all particles have = kinetic energy