Mass Spectrometry

Mass sectrometry

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Mass Spectrometry

Mass Spectrometry: technique used to weigh atoms

Can determine:

- what iotopes exist in an element

-what atoms exisit in a molecule

-how molecules are put together

 

If you push a moving object it will change course - The amount it is deflected depeds on the force used and the mass of the object.

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5 stages:

1. Vapourisation of sample

2. Ionisation: electrons are knocked of atoms by beam of fast moving electrons (creates + charged ions). (if molecule - same but breaks into dif fragments)

3. Acceleration: +ve ions attracted to -ve plate with small whole in it. Some pass through hole as fine beam.

4. Deflection: moving charged ions create magnetic field. This is why their direction is changed when they reach the magnet

5. Dectection: Ions with correct mass hit dectector. Others hit wall of tube.

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Comments

Bilal Ibrar

why is the second page empty??

Didgez

Could be more detailed to help people wanting to get higher grades.

Jodie Randell

the secound page isnt meant to be empty, I did a whole calculation example on it, so dont know what has happened, I will sort it out

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