Ascentis Express HILIC, 10 cm x 2.1 mm I.D., 2.7 μm particles (53939-U)
[A] 10 mM ammonium formate in 10:90 (v/v) water:acetonitrile; [B] 10 mM ammonium formate in 30:70 (v/v) water:acetonitrile
held at 0% B for 5 min; 0 to 100% B in 0.1 min; held at 100% B for 4.9 min; 100 to 0% B in 0.1 min; held at 0% B for 4.9 min
0.2 mL/min
30 °C
ABI 3200 Q-Trap
2 μL
SPE extract from spiked milk
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