L-苯丙氨酸树脂对Cu^(2+)络合性能的研究  

STUDIES ON ADSORPTION PROPERTY OF Cu^(2+) BY L-Phe RESIN

作　　者：魏荣卿[1] 沈珺[1] 王强[1] 刘晓宁[1] 王燕芹[1] 

机构地区：[1]南京工业大学制药与生命科学学院,南京210009

出　　处：《离子交换与吸附》2007年第1期32-39,共8页Ion Exchange and Adsorption

基　　金：科技部创新基金(基金号05C26213200578);江苏省十五攻关项目基金(基金号2001040)

摘　　要：研究了经聚苯乙烯氯乙酰树脂(PS-Ace-Cl)制得的PS手性苯丙氨酸树脂(PS-Ace-Phe)对Cu2+的吸附性能,即通过pH、时间、Cu2+浓度等条件的改变,研究了PS-Ace-Phe对Cu2+的吸附,得到了Cu2+的最佳吸附条件:Cu2+溶液浓度为100mmol/L,pH为6.0~8.5,吸附时间5h,此时吸附效率可达98%,树脂的最高吸附量为2.03mmol/g,且不同Phe担载量的树脂对Cu2+的吸附率都可大于90%,PS-Ace-Phe对Cu2+的吸附可达近1:1,说明PS-Ace-Phe对Cu2+的吸附属络合作用。同时得到吸附树脂的稳定存在条件:Cu2+溶液浓度为10mmol/L,pH为2.0~8.0时,该树脂对Cu2+的吸附稳定性可达24h。A ehiral L-phenylalanine （L-Phe） polystyrene was prepared by ehloroacetylated polystyrene （PS-Ace-Cl） and studies on adsorption property of Cu^2＋. The effects of pH, reaction time as well as the concentration of Cu^2＋ on the adsorption were investigated to get the optimal conditions. The results were as follows： Cu^2＋ concentration 100mmol/L, pH=6.0-8.5, time=5h, and then the adsorption percentage could be up to 98%. The adsorption percentages of resins with different loading amount were all above 90%. It revealed the adsorption between L-Phe resin and Cu^2＋ almost 1：1. Furthermore, the stabilization condition for 24h of the adsorption resin was obtained by Cu^2＋ coneentration of 10mmol/L and pH=2.0-8.0.

关 键 词：聚苯乙烯氯乙酰树脂 聚苯乙烯苯丙氨酸树脂 Cu^2+吸附 PS-Ace-Cl PS-Ace-Phe 

分 类 号：O647.3[理学—物理化学]