LC system | NANOSPACE SI-2 (SHISEIDO) |
---|---|
Analytical column | CAPCELL PAK ADME |
(100 × 2.1 mm i.d., 3-μm particle size, Shiseido) | |
Mobile phase | A, 20Â mM CH3COONH4/H2O |
(Adjusted to pHÂ 5.3 using CH3COOH) | |
B, 1.0Â M CH3COONH4/MeCN/H2O/CH3COOH | |
=1:95:5:0.03 (v/v/v/v) | |
Analytical gradient | 0.0–1.0 min; A/B = 100.0/0.0 |
1.0–4.0 min; A/B = 100.0/0.0 → 91.4/8.6 | |
4.0–5.0 min; A/B = 91.4/8.6 → 88.6/11.4 | |
5.0–8.0 min; A/B = 88.6/11.4 → 79.9/20.1 | |
8.0–10.0 min; A/B = 79.9/20.1 → 0.0/100.0 | |
Analytical flow rate | 0.0–10.0 min; 400 μL/min |
Wash gradient | 0.0–4.0 min; A/B = 0.0/100.0 |
4.0–5.0 min; A/B = 0.0/100.0 → 100.0/0.0 | |
5.0–10.0 min; A/B = 100.0/0.0 | |
Wash flow rate | 0.0–1.0 min; 400 μL/min → 700 μL/min |
1.0–4.0 min: 700 μL/min | |
4.0–5.0 min; 700 μL/min → 400 μL/min | |
5.0–10.0 min; 400 μL/min | |
Post-column addition | MeOH; 400 μL/min |
MS divert valve | 0.0–0.5 min; waste |
0.5–10.0 min; detector | |
Oven temperature | 40 °C |
Injection volume | 3 μL |