摘要
硅钼蓝在高酸度下可与罗丹明B离子缔合络合发生高灵敏度的显色反应，用阿拉伯树胶作为稳定剂，络合物最大吸收波长在585nm处，摩尔吸光系数ε＝1．8×105．在给定条件下，基体钼和大量硼酸对痕量硅的测定没有影响．本法可测定钼箔、钼粉、三氧化钼中0．0005％以上的硅．
Under high acidity, silicon molybdenum blue can be ion associated with rhodamine B and a color reaction of high sensitivity occurs with Arabic gum as stabilizer. The highest absorption wave length is at 585 nm, and the molar ab3orptivity ε=1.8×105. Under given conditions,the substrate:molybdenum and abundant boric acid do not interfere the determination of trace silicon. This method can be used to determine trace silicon in molybdenum foil, molybdenum powder and molybdenum trioxide as its content is over 0.005%.
出处
《上海有色金属》
CAS
1997年第1期40-43,共4页
Shanghai Nonferrous Metals
关键词
硅
硅钼蓝
离子缔合络合物
分光光度法
钼
Silicon, rhodamine B, Silicon molybdcnum blue,Ion associated complex, Spectro photometry
