ABSTRACT
HSQC-ROESY, HMQC-NOESY, HMQC-ROESY......................... 49
2.2.4 Solid-State NMR............................................................................................. 49
2.2.5 Liquid Chromatography-NMR....................................................................... 50
2.2.6 NMR Data on Flavonoid Classes ................................................................... 52
2.3 Mass Spectrometry...................................................................................................... 68
2.3.1 MS Instrumentation and Techniques............................................................... 84
2.3.1.1 Electron Impact and Chemical Ionization......................................... 84
2.3.1.2 Fast Atom Bombardment.................................................................. 86
2.3.1.3 Matrix-Assisted Laser Desorption Ionization ................................... 87
2.3.1.4 Electrospray Ionization and Atmospheric Pressure Chemical
Ionization........................................................................................... 88
2.3.1.5 Tandem (MS-MS) and Multiple (MSn) Mass Spectrometry ............. 89
2.3.1.6 Mass Analyzers.................................................................................. 90
2.3.2 Coupled Techniques Involving Mass Spectrometry......................................... 91
2.3.2.1 Gas Chromatography Coupled to Mass Spectrometry...................... 91
2.3.2.2 High-Performance Liquid Chromatography Coupled to Mass
Spectrometry...................................................................................... 92
2.3.2.3 Capillary Electrophoresis Coupled to Mass Spectrometry ................ 92
2.3.3 Structural Information..................................................................................... 94
2.3.4 Quantitative Considerations ............................................................................ 98
2.4 Vibrational Spectroscopy (IR and Raman) ...............................................................100
