Based on the strong reducibility of KBH_4 for silicomolybdic acid in the medium of weak acid,a new spectrophotometric method for the determination of silicon was developed.

• 基于在弱酸性介质中硼氢化钾对硅钼杂多酸具有很强的还原作用的特性,建立了以硼氢化钾为还原剂的硅钼蓝光度测定硅的新方法,并研究了相应的显色反应条件。