... phase octadecyl (C18) chemical-bonded silica gel columns with 10–15 cm lengths and 2.5–5 µm particle sizes are being used.b) e wavelength to be used is somewhat di erent in di erent methods; ... 3.6).HPLC conditionsColumn: a reversed phase columna, µBondapak C18 Radial-Pak (100 × 5 mm i.d., particle di-ameter 10 µm, Waters, Milford, MA, USA).Mobile phase: acetate bu er solution (pH...