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Sb(V)在高岭土表面的吸附:pH、离子强度、竞争性离子与胡敏酸的影响
ANTIMONY(V) ADSORPTION ON KAOLINITE:EFFECT OF pH,IONIC STRENGTH,COMPETITIVE IONS AND HUMIC ACID
【摘要】 调查了在不同的pH、离子强度、胡敏酸和竞争性离子存在的条件下Sb(V)在高岭土表面的吸附行为.pH对Sb(V)在高岭土表面的吸附行为影响显著,pH在3~8之间时,随介质pH的升高,Sb(V)的吸附减弱;离子强度、胡敏酸的存在对吸附的影响均不显著;PO43-的存在对Sb(V)在高岭土表面的吸附有明显的抑制作用.
【Abstract】 Sb(V) adsorption on kaolinite and influence of chemical parameters such as pH,ionic strength,competitive ions and humic acid was examined.Data indicated that adsorption was affected strongly by pH.Sb(V) adsorption decreased with increasing pH from 3 to 8.Ionic strength and humic acid had no effect on adsorption.The presence of PO3-4 significantly inhibited Sb(V) adsorption on kaolinite.
【关键词】 Sb(V);
吸附;
高岭土;
pH;
离子强度(I);
胡敏酸;
【Key words】 Sb(V); adsorption; kaolinite; pH; ionic strength; humic acid;
【Key words】 Sb(V); adsorption; kaolinite; pH; ionic strength; humic acid;
【基金】 国家自然科学基金资助项目(20777009)
- 【文献出处】 北京师范大学学报(自然科学版) ,Journal of Beijing Normal University(Natural Science) , 编辑部邮箱 ,2011年01期
- 【分类号】P574
- 【被引频次】19
- 【下载频次】582