Preconcentration of ultra-trace germanium in water samples with nano-sized TiO2 colloid and determination by GFAAS with colloid sampling
Abstract
A method for preconcentration and determination of ultra-trace germanium is presented in this work. Germanium (Ge(IV) in this work) in the water samples was preconcentrated by applying nano-sized TiO2 colloid as adsorbent. When the pH values of solution were 6.0–8.0, the adsorption efficiency of nano-sized TiO2 colloid for germanium reached 97.0 ∼ 99.0% in a short time. After