Electron Ionization Mass Spectrometry Figure 15 21 Copyright
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Electron Ionization - Mass Spectrometry Figure 15. 21 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
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Figure 15. 22 a Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Figure 15. 23 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Figure 15. 25 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Unnumbered 15 p 709 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
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https: //www 2. chemistry. msu. edu/faculty/reusch/Org. Page/mass. htm
Figure 15. 26 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Figure 15. 28 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
C 7 H 16 M+ at m/z = 100 Unnumbered 15 p 715 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
“Picket Fence” = straight chain alkane Figure 15. 30 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Cleavage of Alcohols Unnumbered 15 p 715 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Amines Unnumbered 15 p 716 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Carbonyls M - alkene
X = 28, 42, 56, 70 etc Table 15. 3 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
Unnumbered 15 p 717 Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
High Resolution MS (HRMS) • Low resolution mass spectrometers report m/z values to the nearest whole number. High resolution mass spectrometers measure m/z ratios to four (or more) decimal places. § This is valuable because no two molecular formulas have the same exact molecular weight. § Exact MWs can be calculated using exact isotope masses. Table 14. 1 § Thus HRMS is a way to determine chemical formula!
GC-MS
Copyright © 2015 John Wiley & Sons, Inc. All rights reserved.
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