Table 1. Ion Accumulation Times (IT) and TIC Values for 20 Consecutive Scans of a Sample of Rat Brain Extract of 0.086 mg/mL Acquired with DIP, ESI, and HESI Sources^a.

	IT (ms) ± RSD (%)	TIC ± RSD (%)
DIP	181.15 ± 3.02	1.17 × 107 ± 3.78
ESI	1.41 ± 8.61	1.54 × 109 ± 7.71
HESI	1.17 ± 6.30	1.84 × 109 ± 5.93

^aThe flow rate of DIP is 1 μL/min and the flow rate of ESI and HESI is 5 μL/min.