6
Connecting the Inlet Plumbing
Sample Introduction
40
LTQ Series Getting Connected Guide
Thermo Scientific
• For automated injections using an autosampler, connect the outlet from a liquid
chromatography system that contains an autosampler to port 2 of the divert/inject valve.
Then set up an autosampler to make automated injections into the solvent flow produced
by the LC pump.
summarizes the sample introduction and analytical techniques for ESI/MS and
APCI/MS.
Table 8.
Sample introduction and analytical techniques for ESI/MS and APCI/MS
Sample introduction into
the MS detector
ESI analytical
technique
APCI analytical
technique
Procedure for connecting the
plumbing
Direct infusion
Analysis of a pure
analyte
Automatic calibration
and tuning
“Setting Up the Inlet for Direct
Infusion”
High-flow infusion
(syringe pump injection into
LC solvent flow)
Analysis of a pure
analyte
Analysis of a pure
analyte
“Setting Up the Inlet for
High-Flow Infusion”
Loop injection into LC solvent
flow
Analysis of a pure
analyte
Automatic
optimization of tuning
using an analyte
Analysis of a pure
analyte
Automatic
optimization of tuning
using an analyte
“Setting Up the Inlet for Loop
Injections (Flow Injection
Analyses)”
LC system with autosampler
(without chromatographic
separation)
Analysis of one or more
pure analytes
Analysis of one or more
pure analytes
“Setting Up the Inlet for an
LC/MS System with an
Autosampler”
LC system with autosampler
(with LC column for
chromatographic separations)
Analysis of a mixture
Analysis of a mixture
“Setting Up the Inlet for an
LC/MS System with an
Autosampler”