338810
Mass Spectrometry
- 1)Vaporisation
- 2) Ionization
- 3) Acceleration
- 4) Deflection
- 5) Detection
- the magnetic field strength is slowly increased. This changes the mass/charge
ratio of ions that can reach the detector. A mass spectrum is produced.
- the magnetic field strength is slowly increased. This changes the mass/charge
ratio of ions that can reach the detector. A mass spectrum is produced.
- The positive ions' paths are a;tered with a magnetic field. Lighter ions have less
momentum and are deflected more than heavier ions. For a given magnetic field,
only ions with a particular mass/charge ratio make it to the detector.
- 5) Detection
- The positive ions are accelerated
by an electric field
- 4) Deflection
- the gas particles are bombarded with electrons to ionise them.
electrons are knocked off the particles leaving positive ions.
- 3) Acceleration
- the sample is turned into a
gas using an electric heater
- 2) Ionization
- Relative atomic mass can be
calculated from mass spectrum.
- Relative isotopic abundance can be
worked out from a Mass Spectrum
- You can use Mass Spectrometry
on a Molecular Sample.
- Mass Spectrometry has many uses.
- Carbon dating is a method of working out the age of Carbon
based things based on how much Carbon-14 has decayed.
- The pharmatceutical industry uses mass spectrometry to
identify compounds and how long drugs stay in the body.
- Mass spectrometry is used for drugs test in
sport to determine how much of something is
present and if something violates the rules.
- Probes to mars use mass spectrometry on
rocks to study the composition of materials.
- Carbon dating is a method of working out the age of Carbon
based things based on how much Carbon-14 has decayed.
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