【作者】 刘新芳；

【导师】 王煜；

【作者基本信息】 山西大学 ， 分析化学， 2010， 硕士

【摘要】 第一章：简述了环糊精的结构特性,环糊精包合作用的研究进展及环糊精包合物的应用。概述了蒽醌类化合物分析测定的研究动态及蒽醌类化合物检测金属离子的研究进展。第二章：采用荧光光谱法研究了不同环糊精与1,8-二羟基蒽醌之间的包合作用。在适量β-CD存在下,1,8-二羟基蒽醌与镁离子在NH4OH碱性介质中生成的配合物具有强的荧光发射。镁离子浓度在2-20μmol／L范围内与荧光强度呈良好的线性关系,由此建立了水溶液中镁离子的荧光分析方法。检测限为0.19μmol／L,精密度为0.63%。第三章：采用荧光光谱法研究了不同环糊精与1,4-二羟基蒽醌之间的包合作用。在适量β-CD存在下,1,4-二羟基蒽醌与铝离子形成的配合物具有强的荧光发射。铝离子浓度在10-80μmol／L范围内与荧光强度呈良好的线性关系,由此建立了水溶液中铝离子的荧光分析方法。检测限为2.33μmol／L,精密度为0.92%。第四章：1,2-二氨基蒽醌与环糊精形成的包结物具有强的荧光发射。Ag+对1,2-DAAQ-β-CD包合物的荧光具有猝灭作用,荧光强度的改变符合Stern-Volmer猝灭方程。在pH=9,T=60℃的条件下,Ag+的浓度在5.0×10-6～4.0×10-5 mol／L范围内,Fo／F与Ag+的浓度成线性关系,由此可以测定水溶液中的Ag+。方法的检测限为2.66×10-7 mol／L,精密度为0.73%。第五章：采用荧光光谱法和紫外光谱法研究了不同环糊精与1,4-二氨基蒽醌之间的包合作用。Ag+和Cu2+对1,4-DAAQ-β-CD包合物的荧光均具有猝灭作用,荧光强度的改变符合Stern-Volmer猝灭方程。由猝灭常数可知,Ag+的猝灭作用大于Cu2+。该方法测定Ag+和Cu2+的检测限分别为5.33×10-6mol／L和9.23×10-6 mol／L。更多还原

【Abstract】 Chapter 1:The structural features of cyclodextrin moleules, the progress of inclusion complexation behavior of the cyclodextrin hosts and the applications of cyclodextrin inclusion complexes were briefly introduced. Analytical methods for the determination of anthraquinones and the applications of anthraquinones to the determination of ions were also reviewed.Chapter 2:Formation of the inclusion complex of 1,8-Dihydroxyanthraquinone(1,8-DHAQ) with cyclodextrins(CDs) were characterized by fluorescence spectroscopy. In the presence ofβ-CD and NH4OH, the complex between 1,8-Dihydroxyanthraquinone and Mg2+ gives strong fluorescence emission. There is a satisfactory linear relationship between fluorescence intensity and Mg2+ concentration in the range of 2 to 20μmol/L. The detection limit is 0.19μmol/L and the precision is 0.63%.Chapter 3:The inclusion complexation behavior of cyclodextrins(CDs) with 1,4-Dihydroxyanthraquinone(1,4-DHAQ) were investigated by fluorescence spectroscopy. In the presence of P-CD, the complex between 1,4-Dihydroxyanthraquinone and Al3+ gives strong fluorescence emission. There is a satisfactory linear relationship between fluorescence intensity and Al3+ concentration in the range of 10 to 80μmol/L. The detection limit is 2.33μmol/L and the precision is 0.92%.Chapter 4:The formation of the inclusion complex of 1,2-Diaminoanthraquinone (1,2-DAAQ) with cyclodextrins(CDs) were studied by absorption and fluorescence spectroscopy. Ag+ was found to have a quenching effect on the fluorescence intensity of 1,2-DAAQ-β-CD inclusion complex. The fluorescence responses were concentration-dependent and can be well described by the typical Stern-Volmer equation. Under the condition of pH=9 and T=60℃,there is a satisfactory linear relationship between F0/F and Ag+ concentration in the range of 5.0×10-6 to 4.0×10-5 mol/L. The detection limit of Ag+ is 2.66×10-7 mol/L and the precision is 0.73%.Chapter 5:The formation of the inclusion complex of 1,4-Diaminoanthraquinone (1,4-DAAQ) with cyclodextrins(CDs) were characterized by absorption and fluorescence spectroscopy. Both Ag+ and Cu2+ were found to quench the fluorescence of 1,4-DAAQ-P-CD inclusion complex. The fluorescence responses were concentration-dependent and can be well described by the typical Stern-Volmer equation. The detection limits are 5.33×10-6 mol/L and 9.23×10-6 mol/L for Ag+ and Cu2+, respectively.更多还原