Column | Agilent Zorbax Eclipse Plus C18, 100 × 3.0 mm, 3.5 μm particles |
Column Temperature | 40–50 °C |
Mobile Phase Components | A = 10 mM ammonium acetate, B = acetonitrile |
Mobile Phase Gradient | Time (min) | % B |
0.0 | 5.0 |
8.4 | 100.0 |
35.0 | 100.0 |
36.0 | 5.0 |
39.0 | 5.0 |
Mobile Stage Flow Rate | 0.8 mL/min |
Injection Size | 10–50 μL |
Detection, UV | 205–300 nm; spectra recorded at λ = 210, 220, 230, 250, and 270 nm; 205 nm for variable wavelength detector |
Detection, MS | API-ES or APCI, positive ion and negative ion (mass range 80–1500) |
Instrumentation Used | Agilent 1100 LC (vacuum degasser, binary pump, heated column compartment)/Model ATG1315A diode array detector/1100 mass selective detector (MSD). Agilent Chemstation rev A.10.02 software. Agilent 1100 LC (vacuum degasser, binary pump, heated column compartment, variable wavelength detector)/Applied Biosystems (Foster City, CA) Mariner TOF-MS (APCI mode). Agilent Chemstation rev A.10.02 and Applied Biosystems Data Explorer version 4.0.0.1 software. Agilent LCs (binary pump, autosampler, heated column compartment)/Thermo Finnigan (Waltham, MA) LCQ Deca XP Max ion trap MS or Thermo Finnigan LTQ FT Ultra MS or Waters Q-TOF Premier TOF-MS. Thermo Finnigan Xcalibur and Waters MassLynx software.
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Sample Preparation | None, direct injection |