A new analytical workflow using HPLC with drift-tube ion A II HPLC system consisting of a Flexible Pump, a autosampler, and a MCT (all from Aijiren Technologies, Waldbronn, Germany) equipped with an Aijiren Lab Poroshell 120 Bonus-RP column (3.0 × 100 mm, 2.7 μm) combined with a C18 Guard column (4 × 3.0 mm, Phenomenex) was employed.