Parameter Setting
LC Method Pump 1 Gradient
Reservoir A = 10% MeOH in water, 5 mM formic acid
Reservoir B = ACN, 5 mM formic acid
Time (min) %A %B Flow Rate (µL/min)
0.0 93 7 300
0.5 93 7 300
2.0 50 50 300
3.0 50 50 300
3.01 93 7 300
6.0 93 7 300
Column Oven Temperature ranges from 40 °C
Column Type Polar RP Phenyl column, 2x100 mm, 2.5µm particle size
Injection Volume 20 µL
Needle Rinse Time 5 - 10 seconds, using flushport
Rinse Solvent Mobile Phase A
Injection Mode Standard
Autosampler Tray Temp. 20 °C
Typical Retention Time L-Abrine = 2.1 min
Ricinine = 3.5 min
HPLC Degasser Powered for continuous use (there are no settings)
MS Scan Mode MS/MS selected reaction monitoring (SRM)
Ionization Type Turbo-ionspray (similar to ESI)
Ion Polarity Mode Positive ion
Scan Type 100 msec per channel
Collision Gas (CAD) High or "12"
Curtain Gas (CUR) 20
Ion Source Gas 1 (GS1) 65
Ion Source Gas 2 (GS2) 10
Ion Spray Voltage (IS) 5100
Temperature (TEM) 550 (interface heater on)
Declustering Potential (DP) see Table 5
Entrance Potential (EP) 10
Collision Energy (CE) see Table 5
Table 1: LC/MS/MS Parameters and Settings.