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。
In a flow injection separation and preconcentration system incorporating a microcolumn, the adsorption behavior (effect of pH, kinetic adsorption capacity) of metal ions Cu^(2+), Cr^(3+), Mn^(2+), Ni^(2+), La^(3+), Eu^(3+), Ga^(3+), Mo(Ⅵ) and W(Ⅵ) on TiO_2 powder with different crystal structure and particle diameter was studied and compared. In addition, the mechanism of the adsorption of metal ions on TiO_2 powder was explored. The results show that crystal structure and particle diameter of the TiO_2 powder will definitely affect the adsorption capacity of metals on it.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2004年第5期704-707,共4页
Journal of the Chinese Society of Rare Earths
基金
武汉市晨光计划项目(995004080)
关键词
分析化学
分离预富集
金红石型
锐钛矿型
混合型
TIO2
稀土
analytical chemistry
separation and preconcentration
rutile
anatase
mixphase
TiO_2
rare earths
