Class Notes (839,590)
Canada (511,419)
Chemistry (614)
CHEM 205 (63)
All (12)

Mass Spectrometry Lecture

4 Pages

Course Code
CHEM 205

This preview shows page 1. Sign up to view the full 4 pages of the document.
Mass Spectrometry (doesn’t require light!) • Mass spectrometer has 3 parts: o Ion source (ionizes a gas sample and sends the beams out) o A magnetic or electric field to alter the movement of ionized particles o A detector to detect the ionized particles • What kind of information does mass spectrometry tell us? o Mass of “fragments” and isotopes of the compound of interest o Most importantly show characteristic peaks for halogens (Cl, Br) containing compounds • Shown by mass spectrometry is: M/Z where M is mass and Z is charge o We will typically only look at +1 charged fragments, thus M/z=M • 2 methods of ionization o Photoionization: M + hf=M+, e-, fragments via PI o Elecron impact ionization: M +e-M+, 2e-fragments via EI • 2 methods of mass separation o Magnetic field: F=evB o Electric Field: F=eE o For both, the acceleration of the particle will be F=MA o **E=electric field=Voltage/distance • In an electric field (more common): the lighter particles accelerate more, hits detector
More Less
Unlock Document

Only page 1 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.