Schiff碱型和仲胺型壳聚糖冠醚对金属离子的络合吸附性能  

Adsorption property of Schiff base Type and Secondary Amine Type Chitosan Crownethers

作　　者：谭淑英[1] 汪玉庭[1] 彭长宏[1] 唐玉蓉[2,3] 栾兆坤 

机构地区：[1]武汉大学环境科学系 [2]武汉大学分析测试中心 [3]中国科学院生态环境研究中心

出　　处：《应用化学》1999年第1期98-100,共3页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金;中国科学院生态环境研究中心环境水化学国家重点实验室开放基金

摘　　要：壳聚糖（ＣＴＳ）可有效地去除废水中的有毒金属离子［１］，但其分子中的氨基可接受质子成盐，造成在酸性介质中溶解流失，使应用受到限制．近年来国内外学者对壳聚糖的改性进行了广泛的研究，制备了许多理化特性和用途不同的壳聚糖衍生物［２～８］，扩大了其应用范围，...Two N Schiff base type chitosan crownethers(S15 CTS and S18 CTS) were synthesized by reaction of 4′ formylbenzo 15 crown 5 and 4′ formylbenzo 18 crown 6 with chitosan respectively. N secondary amine type chitosan crownethers(Z15 CTS and Z18 CTS) were also prepared by reaction of N Schiff base type chitosan crownethers with sodium borohydride. Their static adsorption properties for metal ions (Pd 2+ , Cu 2+ and Hg 2+ ) had been studied. The results showed that four chitosan crownethers had good adsorption character and adsorption selectivity for Pd 2+ in the presence of Cu 2+ or Hg 2+ .

关 键 词：席夫碱 仲胺型 壳聚糖冠醚 吸附性能 铅 铜 水 

分 类 号：O647.33[理学—物理化学] O614.433[理学—化学]