Mass Spec

Question 1

How do you work out rel atomic mass from mass spectrum

Answer 1

Times mass by abundance
Add up totals
Divide by total abundance

Question 2

Name and explain four stages of mass spec?

Answer 2

Vaporisation and ionisation
Sample dissolved and pushed through small nozzle at high pressure and high voltage applied causes electrons to be lost so pod

Acceleration
Electric field have to be pos charged to b affected by field

Ion drift
Constant speed at kinetic enegery they drift ions with lower mass and charge drift at higher speeds

Detection
Lower mass and charge detected first
Electrical current is sent when charged partial hits it