510759
How Mass.S works
- 1) Sample is heated if not
already a gas its
vapourised
- 2) IONISATION
- Gaseous atoms are bombarded by
electrons from gun
- knocking e- out of
the atom making a
+ve ion
- Gaseous atoms are bombarded by
electrons from gun
- 3) ACCELERATION
- +ve ions attracted to
-ve charged electrical
plates
- ions are charged and
accelerated by attractive
forse of electric field
- +ve ions attracted to
-ve charged electrical
plates
- 4) DEFLECTION
- charged particles
deflected by magnetic
field
- faster/heavier/less charged ions=
small deflection
- charged particles
deflected by magnetic
field
- 5)DETECTION
- each ion takes
different path due to
deflection
- detected when +ve ions hit -ve
plate
- Causes a current
- is amplified and sent
to computer
- each ion takes
different path due to
deflection
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