Table 1.

Instruments and operating conditions

Instrument system	Operating conditions
Rate of syringe infusion pump	180 μl/ hr
Syringe volume/diameter	500 μl/3.26 mm
Nebulizer flow	0.4 bar
Dry gas flow/ Temp.	4 L/min 180℃
Transfer funnel 1/2 RF power	150/180 Vpp
Hexapole RF power	150 Vpp
Quadrupole ion Energy	3 eV
Low mass	50 m/z
Collision RF power	135 Vpp
Transfer time	65 μs
Pre puls storing	8.0 μs
Source-induced dissociation energy range	0~200 eV
Collision-induced dissociation energy range	0~50 eV