壳聚糖对镧系金属离子吸附性的研究  

Study of the Lanthanide Metal Ions Adsorption Capacity on Chitosan

作　　者：李继平[1] 邢巍巍[1] 杨德君[1] 陆雅琴[1] 

机构地区：[1]辽宁师范大学实验中心

出　　处：《辽宁师范大学学报（自然科学版）》2001年第1期54-56,共3页Journal of Liaoning Normal University:Natural Science Edition

基　　金：辽宁省教育厅重点科研项目!(9706121046)

摘　　要：壳聚糖分子中含有活性基团－ＮＨ２和－ＯＨ，可使其与金属离子形成稳定的配合物．研究了壳聚糖对镧系金属离子在不同浓度，不同时间的吸附性，测试手段辅以电感耦合等离子体原子发射光谱法（ＩＣＰ－ＡＥＳ法）．实验结果表明，壳聚糖对镧系金属离子均有吸附性，吸附序列为Ｎｄ３＋＞Ｌａ３＋＞Ｓｍ３＋＞Ｌｕ３＋＞Ｐｒ３＋＞Ｙｂ３＋＞Ｅｕ３＋＞Ｄｙ３＋＞Ｃｅ３＋，并且吸附作用受离子浓度和反应时间的影响．There are active groups -NH2 and -OH in chitosan, which can combine with metal inos to form stable coordination compounds. We have studied the adsorption capacity of Lanthanide metal ions on chitosan with ICP- AES. It was found that chitosan has some adsorption capacity of Lanthanide metal ions, and the adsorption order is as follows: Nd3+>La3+>Sm3+>Lu3+>Pr3+>Yb3+>Eu3+>Dy3+>Ce3+. Also the effect of concentration of solution and the adsorption time on the adsorption capacity was studied.

关 键 词：壳聚糖 镧系金属离子 吸附性 ICP-AES法 吸附率 离子浓度 反应时间 

分 类 号：O614.33[理学—无机化学] O647.31[理学—化学]