矿泉水中偏硅酸的实验室检验常采用硅钼酸盐法和用蓝法[1]，由于钼蓝法显蓝色，有利于目视比色，遂将其进行改进，使试剂固体化，以达到对现场简便、快速测定之目的，取得了成功，现报告如下。1材料与方法1．1仪器试剂：仪器为721型分光光度计；25ml具塞比色管。除标准试剂外， Laboratory tests of silicic acid in mineral water often use silicomolybdate method and the blue method [1], because the blue molybdenum blue method is conducive to visual colorimetric, then its improvement, the reagent solidification, In order to achieve the site simple, rapid determination of the success achieved, the report is as follows. 1 Materials and Methods 1.1 Instrument Reagents: Instruments for the 721 spectrophotometer; 25ml with plug colorimetric tube. In addition to standard reagents,