Influence of Metal Impurities in Silica Gel on Protein Analysis in Reversed-phase HPLC

Abstract
In the case of protein analysis using reversed-phase high-performance liquid chromatography(RP-HPLC), it became evident that metal impurities in silica gel give great influence on peak shapes of protein. High metal impuritie resulted in poor column efficiency. The influence of metal impurities was found larger than that of residual silanols.