摘要
用D-氨基葡萄糖盐酸盐与氯化镝反应,制备了氨基葡萄糖-镝配合物.用元素分析、电导率、红外光谱、紫外光谱、X射线光电子能谱等分析测试手段对配合物进行了表征.以EDTANa2·Fe(Ⅱ)-H2O2体系产生羟自由基(·OH)研究氨基葡萄糖与氨基葡萄糖-镝配合物对羟自由基的清除作用.结果表明,氨基葡萄糖与Dy3+形成了配合物,其中氨基葡萄糖氨基上的N和仲羟基的O及Cl-参与了配位.该配合物对·OH均具有明显的清除作用,在浓度为2.5mg/mL时对·OH的清除率达到85%,D-氨基葡萄糖对·OH的清除率达到77%.各样品对·OH自由基的清除能力均随着质量浓度的增加而上升.
The coordination compound of glucosamine-Dy was synthesized from D-glucosamine hydrochloride with Dy^3＋ ion, and characterized by elemental analysis, molar conductivity, IR, UV-Vis and XPS, respectively. The scavenging effects of D-glueosamine and glucosamine-Dy complex on hydroxyl free radical produced by EDTANa2·Fe（Ⅱ）-H2O2 system were studied. The results showed that Dy^3＋ ions were coordinated with amino groups, secondary hydroxyl groups and Cl^-. D-glucosamine and glucosamine-Dy complex had significant scavenging effects on hydroxyl free radical. The glucosamine-Dy complex displayed higher scavenging effects on the hydroxyl free radical compared with glucosamine when mass concentration of the sample was 2.5 mg/mL, the removal rate of glucosamine-Dy complex on hydroxyl free radical reached 85%, and that of D-glucosamine was 77%. The removal rates of D-glucosamine and glucosamine-Dy complex on hydroxyl free radical increased with their mass concentrations.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2008年第5期967-971,共5页
The Chinese Journal of Process Engineering
