Financial support from the National Natural Science Foundation of China (Grant Nos. 20175029 and 20375040) is gratefully acknowledged.
A comprehensive two-dimensional liquid chromatographic system (2D SCX/RP) is con- structed with a 10-port-2-way valve using strong cation exchange chromatography (Hypersil SCX, 100 mm×4.6 mm I.D.) followed by reverse...