β-环糊精-1，8-二羟基蒽醌包合物荧光光度法测定镁  

Fluorophotometric Determination of Magnesium with 1,8-Dihydroxyanthraquinone in Aqueous β-Cyciodextrin Solution

作　　者：刘新芳[1] 张昭[1] 王煜[1] 

机构地区：[1]山西大学化学化工学院,山西太原030006

出　　处：《山西大学学报（自然科学版）》2009年第A02期50-52,共3页Journal of Shanxi University(Natural Science Edition)

基　　金：山西省自然科学基金（No.2008011015-1）

摘　　要：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．λex／λem=540／594nm．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，检测限为0．19μmol／L．检测了10余种金属离子对测定镁离子的影响，结果表明，该方法选择性好、灵敏度高且操作简便．In the presence of β-CD and NH4OH, the complex formed between 1,8-Dihydroxyanthraquinone and Mg2＋ in water gives strong fluorescence emission at 594 nm. Under optimal conditions,there was a satisfactory linear relationship between fluorescence intensity and Mg^2＋ concentration in the range of 2 to 20 μmol/L. The detection limit was 0.19μmol/L. The influences of some commonly coexisting ions on the determination of Mg^2＋ were investigated. The proposed method offers the advantages of high selectivity and sensitivity as well as easy operation.

关 键 词：Β-环糊精 1 8-二羟基蒽醌 镁 荧光强度 

分 类 号：O657.3[理学—分析化学]