Table 1. ESI/IMS Operating Parameters.

Parameter	Value	Parameter	Value
Length of drift region	75 mm	Drift field strength	66 V/mm
Length of desolvation region	50 mm	Desolvation field strength	66 V/mm
Emitter-to-ring voltage	2–3 kV	Liquid flow to ESI	2 μL/min
Drift gas flow rate	250 mL min–1	Emitter diameter	50 μm
Drift gas dew point	–85 °C	Drift region temperature	25–29 °C
Drift gas	Purified dry air	Desolvation region temperature	25–29 °C
Pressure	1009–1068 hPa	Plasma excitation frequency	21 kHz
Plasma source gas flow rate	90 mL min–1	Plasma excitation amplitude	9 kVpeak–peak