TOF mass spectrometer

MASS SPECTROMETRY 

• ELECTROSPRAY IONISATION

sample dissolved in volataile solvent 

injected into fine hypodermic needle

giving a fine mist

tip of needle is connected to positive terminal 

sample gains a proton, making it positive. 

• ELECTRON GUN 

high energy electron fired at sample using electron gun 

knocks off an electron 

forming positive ion 

• ACCELERATION 

positive ions attracted to negatively charged plate, causing…