【摘要】 考察了在流动注射的微柱分离富集体系中不同晶型和粒径的TiO2微粉对Cu2+,Cr3+,Mn2+,Ni2+,La3+,Eu3+,Ga3+,Mo(Ⅵ)和W(Ⅵ)等金属离子的吸附pH条件及动态吸附容量,并进行了比较;初步探讨了TiO2微粉的吸附机制。结果表明,当TiO2的粒径大小相近时,晶型对吸附容量的影响不可忽略;当晶型相同时,粒径的大小则起着重要的作用。更多还原

【Abstract】 In a flow injection separation and preconcentration system incorporating a microcolumn, the adsorption behavior （effect of pH, kinetic adsorption capacity） of metal ions Cu²⁺, Cr³⁺, Mn²⁺, Ni²⁺, La³⁺, Eu³⁺, Ga³⁺, Mo（Ⅵ） and W（Ⅵ） on TiO₂ powder with different crystal structure and particle diameter was studied and compared. In addition, the mechanism of the adsorption of metal ions on TiO₂ powder was explored. The results show that crystal structure and particle diameter of the TiO₂ powder will definitely affect the adsorption capacity of metals on it.更多还原