邻二氮菲荧光法测定氯碱厂阳极泥中痕量钌

研究了在乙酸-乙酸钠缓冲溶液中，在盐酸羟胺还原剂存在下，于水浴中加热近沸，保温5 min，钌与邻二氮菲形成1∶3络合物。它的荧光激发波长峰为448 nm，发射波长峰为586 nm。钌与荧光强度线性范围为0～10μg·(25 mL)-1。样品中的钌通过蒸馏分离，方法应用于氯碱厂阳极泥中钌的含量分析，具有满意的分析结果。

Fluorimetric Determination of Trace Ruthenium in Anode Slime of Alkali Chloride Factory with 1,10-Phenanthroline

The complex reaction of ruthenium with 1,10-phenanthroline was studied. In the medium of pH 5 HAc-NaAc buffer and NH2OH * HCl solution, ruthenium reacts with 1,10-phenanthroline to form a 1 : 3 complex by heating in a boiling water bath for 5 min. The fluorescence peak excitation wavelength is 448 nm, and the emission peak wavelength is 586 nm. The linear relation between fluorescence intensity and the concentration of Ru(II) was found to be 0-10 microg x 25 mL(-1). The ruthenium in the sample was separated by distill. The method has been used to the determination of ruthenium in anode slime of alkali chloride factory with satisfactory results.