Quantitation of aliphatic acids from lignin-derived streams by HPLC-RID v1

An analytical method was developed using high performance liquid chromatography with refractive index detection (HPLC-RID) to quantify the concentrations of aliphatic acids. The analytes quantified were oxalic acid, malic acid, malonic acid, succinic acid, glycolic acid, lactic acid, formic acid, acetic acid, and propionic acid in samples from lignin-derived streams. This method utilized an ion exclusion column to provide chromatographic separation across a 30 minute run-time.