Contents
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_______________________ Finnigan LTQ Hardware Manual _________________________
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Contents
Read This First ........................................................................................................................... vii
Changes to the Manual and Online Help .............................................................................................viii
Abbreviations ......................................................................................................................................... ix
Typographical Conventions .................................................................................................................xiii
Data Input........................................................................................................................... xiii
Boxed Information.............................................................................................................. xiv
Topic Headings.................................................................................................................... xx
Safety Precautions ................................................................................................................................ xvi
Solvent and Gas Purity Requirements ................................................................................................xviii
Service Philosophy ............................................................................................................................... xix
Level of Repair ..................................................................................................................................... xix
Reply Cards ........................................................................................................................................... xx
Introduction ............................................................................................................................... 1-1
1.1 Ion Polarity Modes.....................................................................................................................1-3
1.2 Ionization Techniques ................................................................................................................1-4
Electrospray Ionization........................................................................................................1-4
Atmospheric Pressure Chemical Ionization ........................................................................1-7
Atmospheric Pressure Photoionization..............................................................................1-10
Nanospray Ionization.........................................................................................................1-12
1.3 Scan Power and Scan Modes ...................................................................................................1-13
MS Scan Mode..................................................................................................................1-13
MS/MS Scan Mode ...........................................................................................................1-13
MSn Scan Mode................................................................................................................1-13
1.4 Scan Types ...............................................................................................................................1-14
Full Scan............................................................................................................................1-14
Selected Ion Monitoring....................................................................................................1-15
Selected Reaction Monitoring...........................................................................................1-16
Consecutive Reaction Monitoring.....................................................................................1-16
ZoomScan..........................................................................................................................1-17
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