ORGANIC CHEMISTRY Chapter g 58309 9.12 An introduction to mass Spectrometry 质谱 Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 9 9.12 An Introduction to Mass Spectrometry 质谱
ORGANIC CHEMISTRY Chapter g o a mass spectrometer produces a spectrum of masses based on the structure of a molecule o It is a spectrum or plot of the distribution of ion masses corresponding to the formula weight of a molecule. fragments derived from the molecule. or both 45 ,88 45ψ丸$101101111181112n f Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 9 A mass spectrometer produces a spectrum of masses based on the structure of a molecule. It is a spectrum or plot of the distribution of ion masses corresponding to the formula weight of a molecule, fragments derived from the molecule, or both
ORGANIC CHEMISTRY Chapter g 9. 13 The Mass Spectrometer Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 9 9.13 The Mass Spectrometer
ORGANIC CHEMISTRY Chapter g lightest aler io vapo 3 electron beam ionises charged particle beam l n sample heaviest 6 magnetic field separates particles electron based on mass charge ratio Source 4 particles accelerated into magnetic fjeld magnet Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 9
ORGANIC CHEMISTRY Chapter g o In an electron impact mass spectrometer molecules in gaseous state under low pressure are bombarded with a beam of high energy electrons o One of the things this bombardment can do is dislodge one of the electrons of the molecule and produce a positively charged ion called the molecular ion aniston fragmentation 十 radical cati an adical cati on 2e molecule moleculat fragment Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 9 In an electron impact mass spectrometer molecules in gaseous state under low pressure are bombarded with a beam of high energy electrons. One of the things this bombardment can do is dislodge one of the electrons of the molecule and produce a positively charged ion called the molecular ion