Table 1.

Intensity of the peptide (LKEccDKPLLEK, +2, m/z 766.8929) identified from different injection amount of BSA digest after analyzed by CZE-ESI-MS/MS in triplicates.

Injection amount	Run1	Run2	Run3	Average	Standard deviation	RSD (%)
750 nM (3500 amol)	6.36 × 105	6.20 × 105	5.30 × 105	5.95 × 105	5.7 × 104	10
370 nM (1700 amol)	2.35 × 105	2.46 × 105	2.41 × 105	2.41 × 105	5.5 × 103	2
150 nM (700 amol)	9.75 × 104	1.10 × 104	8.02 × 104	9.59 × 104	1.5 × 104	15
75 nM (350 amol)	3.85 × 104	2.92E+04	4.37 × 104	3.71E+04	7.3 × 103	20
25 nM (120 amol)	1.40 × 104	1.57 × 103	1.28 × 104	1.42E+04	1.5 × 103	10
12 nM (60 amol)	6.28 × 103	6.49 × 103	7.25 × 103	6.67 × 103	5.1 × 102	8