How are ions created for each of the mass spectra in Figure 21-4? Why are the two
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How are ions created for each of the mass spectra in Figure 21-4? Why are the two spectra so different?
Figure 21-4
Transcribed Image Text:
141 156 157 100 100 H .N. MH* 227 Electron Chemical ionization ionization NH 50 50 Pentobarbital Nominal mass = 226 185 155 69 213 98 112 197 207 80 59 255 171 +tt t T 140 129 173 83 97 111 139 197 60 80 100 120 140 160 180 200 220 240 260 60 80 100 120 160 180 200 220 240 260 m/z m/z Relative abundance Relative abundance
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