Kinetic spectrophotometric analysis of germanium and silicon in aqueous alcohol without their separation or concentration is an important analytical issue, as such systems have been widely applied in the sol-gel synthesis of SiO2-GeO2 glasses, the technology to introduce varied concentrations of germanium to the silicon matrix. Of extreme interest is the initial stage of copolycondensation of germanium and silicon compounds; to a great extent, it determines the properties of the final product. The proposed method can be applied to other Si-and Ge-containing systems [1].
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