影响硒在烟草上吸附的因素  

Influence Factors on Adsorption of Selenium(Ⅳ) on Tobacco

作　　者：杨志宏[1] 吴长英[2] 欧阳萌[2] 聂基兰[2] 

机构地区：[1]南昌大学材料科学与工程学院,江西南昌330047 [2]南昌大学化学系,江西南昌330047

出　　处：《南昌大学学报（理科版）》2006年第2期133-135,共3页Journal of Nanchang University(Natural Science)

基　　金：南昌大学211工程资助项目(103-2);南昌大学校基金资助项目(Z02446)

摘　　要：采用静态法研究Se(Ⅳ)在烟草上的吸附,考察了吸附达到平衡的时间和温度、pH值、表面活性剂及无机盐对吸附的影响,测定了吸附等温线。结果表明Se(Ⅳ)在烟草上的吸附为多分子层吸附,吸附速率快,且易解吸,使用表面活性剂能增大Se(Ⅳ)的吸附量,吸附过程受温度、pH值的影响不大,但无机盐存在对吸附的影响很大。The adsorption of Selenium （ Ⅳ ） on tobacco has been studied by static method in this paper. The effect of adsorption equilibrium time, temperature, pH, surfactant and inorganics on adsorption has been shown, and the adsorption isotherm has been determinated. The result showed that the absorbency of selenium （ Ⅳ ） on tobacco is multimolecular adsorption ;the velocity of adsorption is fast;meanwhile,it is easy to desorb. The absorbency of selenium（Ⅳ） can be added when the surfactants are used,the effects of temperature and pH on absorption are little, while the effect of inorganics is obvious.

关 键 词：硒 烟草 吸附 表面活性剂 

分 类 号：O647.3[理学—物理化学]