壳聚糖金属离子配合物吸附尿素性能研究  

Study on the Sorption Characteristic with Chitosan\|metal Complexes for Urea

作　　者：周永国[1] 齐印阁[1] 王秀娟[1] 杨越冬[1] 

机构地区：[1]河北职业技术师范学院,昌黎066600

出　　处：《中国生物化学与分子生物学报》1999年第4期677-679,共3页Chinese Journal of Biochemistry and Molecular Biology

基　　金：河北省教委资助

摘　　要：Chitosan is a nontoxic natural polysaccharide with good biocompatibility.It can form polymer\|metal complexes with many metal cations for its extra electron pair of nitrogen.The complexes exhibit high sorptive capacity and good selectivity for urea.The sorption capacity was influenced by the metal content in the complex,time of sorption,concentration of urea etc.The sorption capacities were 83.6,79.1,72.9,69.4 and 53.4 mg/g for urea by the chitosan metal complexes of Cu(Ⅱ),Cd(Ⅱ),Co(Ⅱ),Zn(Ⅱ) and Fe(Ⅲ),respectively at pH 6.0 and the concentration of urea being 1 300 mg/L.Chitosan is a nontoxic natural polysaccharide with good biocompatibility.It can form polymer\|metal complexes with many metal cations for its extra electron pair of nitrogen.The complexes exhibit high sorptive capacity and good selectivity for urea.The sorption capacity was influenced by the metal content in the complex,time of sorption,concentration of urea etc.The sorption capacities were 83.6,79.1,72.9,69.4 and 53.4 mg/g for urea by the chitosan metal complexes of Cu(Ⅱ),Cd(Ⅱ),Co(Ⅱ),Zn(Ⅱ) and Fe(Ⅲ),respectively at pH 6.0 and the concentration of urea being 1 300 mg/L.

关 键 词：壳聚糖 金属离子配合物 尿素 吸附 

分 类 号：R983[医药卫生—药品]