The structure of atoms Flashcards
5 stages of time of mass spectrometry
1-ionisation
2-acceleration
3-ion drift
4-ion detection
5-data analysis
what is the condition for time of mass spectrometry
it must be kept under high vacuum
Why must it be kept under high vacuum
to prevent the ions that are produced frm colliding with molecules present in the air
Two types of ionisation
Electrospray ionization
Electron impact ionization
What is electrospray ionization used for
it is used for large organic molecules
what is the equation for electrospray ionization
X + H+ ——->. XH+
What is electron impact ionization used for
used for elements and substances with low formula mass
Equation for electron impact ionization
X —-> X+ + e-
Which 2 pieces of information are analyzed in data analysis
the current that is produced
the flight tube times
Formula for time of flight
distance x velocity
