Thermo Finnigan LTQ User Manual

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

Thermo Finnigan LTQ Specifications

General

Mass Range	m/z 50-2000
Resolution	Unit mass resolution
Mass Analyzer	Linear Ion Trap
Detector	Electron Multiplier
Ion Source	Electrospray Ionization (ESI) or Atmospheric Pressure Chemical Ionization (APCI)
Polarity	Positive and Negative
MSn	Up to 10 stages (MS10)
Mass Resolution	Unit mass resolution
Vacuum System	Differentially pumped with turbo pumps
Power Requirements	230 VAC, 50/60 Hz