Evaluation of effect of protein on dissolution rates of amorphous silica

通过对无定形二氧化硅在含有BSA和酸性、中性和碱性氨基酸的溶液（pH4，5，6）中的溶解实验，评价了有机分子对矿物在地表环境中溶解的影响。结果表明，BSA大大提高了无定形二氧化硅的溶解速率。碱性氨基酸也表现出较强的增强作用相对于中性和酸性氨基酸。因此，碱性氨基酸残基与无定形二氧化硅表面的相互作用可能作为BSA的速率增强机制发挥重要作用。

Experiment on dissolution of amorphous silica in solutions (pH4, 5, 6) containing BSA and various amino acids including acidic, neutral, and basic amino acids were performed to evaluate the effect of organic molecules on dissolution of minerals in the earth's surface environments. Results indicated that BSA greatly enhanced the dissolution rate of amorphous silica. Basic amino acids also exhibited stronger enhancement effect relative to neutral and acidic amino acids. Therefore, the interaction of basic amino acids residues with the amorphous silica surface are likely to play an important role as rate enhancement mechanism of BSA.