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2D-LC User Guide
217
8
Run the System
Run the Experiment
Table 27
Recommended conditions in 2D (LC-MS)
Parameter
Value
Ion Source
Atmospheric pressure electrospray (Dual AJS ESI)
Ion Mode
Dual AJS ESI
Ion polarity
Both
Storage Mode
Both
LCMS Stream
MS
Acquisition Mode
Acquisition Mode MS1 Min Range (m/z) 50, Max Range (m/z) 1000, Scan
Rate (spectra/sec) 3.00
Instrument Parameters
Gas Temp
250 °C
Gas Flow
11 L/min
Nebulizer
40 psig
SheathGasTemp
350 °C
SheathGasFlow
12 L/min
Scan Segment
1
Scan Source Parameters
Vcap
3500 V
Nozzle Voltage
300 V
Fragmentor
120
Skimmer1
45
OctopoleRFPeak
750
ReferenceMasses
Ref Mass Enabled
Enabled
Use Bottle A
RefNebulizer
True
Ref Nebulizer
0 psig
AutoRecalibration
Average Scans
1
Detection Window
(ppm)
100 ppm
To avoid problems in the LC/MS due to the high flow rate the effluent from the second dimension
column should be split. The recommended split ratio is 1:2