CHEM 2220U Lecture 1: CHEM2220- Mol SPEC Course Notes

• School: UOIT
• Department: Chemistry
• Course: CHEM 2220U
• Professor: Olena Zinkina

Document Summary

3220 lecture2 spec page 1 spec page 2 spec page 3 spec page 4 spec page 5 spec page 6 spec page 7 spec page 8. Ei is the first spectrum, m/z= m+ is 180 more defragmentation. 181 is the m+1 peak spec page 9. A lot of fragmentation hard soft spec page 10. Main principle, micro droplets that you spray into vacuum. Can see both positive and negative charges spec page 11. High energy atoms, bombard atoms that don"t dissolve like polar matrix. Liquid with low vapor pressure, bombarded matrix with compound and forms cation with the molecule and you can move and it will be detected. Matrix contains your molecule, react with light (light) Normally very fast measurement but need time to prepare the matrix. See paper example spec page 14 spec page 15. Change voltage if using ei, make other things more visible. Ci very useful, can look for different atoms.