In high-performance liquid chromatography (HPLC), it is common for bases and unreacted ionized silanols on silica-based columns to cause irreproducible retention, broad peaks, and peak tailing when working with basic analytes. David S. Bell, Lead Consultant at ASKkPrime LLC offers innovative HPLC strategies that can help mitigate such issues.
Headspace gas chromatography-ion mobility spectrometry (HS-GC-IMS) and gas chromatography-olfactometry-mass spectrometry (GC-O-MS) reveal aroma compounds in two Sichuan pepper oils.
A new “one-shot” strategy for preparative chiral supercritical fluid chromatography (SFC) offers fast and effective approach to obtain and characterize individual enantiomers.