无机还原剂与光泽精化学发光反应的研究Ⅲ．钒（Ⅱ）－光泽精体系的化学发光反应

An Investigation of the Chemiluminescence Reaction between Lucigenin and Inorganic ReductantsⅢ.The Chemiluminescence Reaction of V(Ⅱ)-Lucigenic System

本文采用装有Ｊｏｎｅｓ柱的流动注射系统，研究了钒（Ⅱ）－光泽精体系的化学发光反应。在此基础上建立了痕量钒测定的新方法。方法的检出限３×１０￣（－１０）ｇ·ｍＬ￣（－１）；对于１．０×１０￣（－７）ｇ·ｍＬ￣（－１）钒标准溶液测定的相对标准偏差为２％（ｎ＝１１）；线性范围１．０×１０￣（－９）～９．０×１０￣（－５）ｇ·ｍＬ￣（－１），相关系数大于０．９９８０。该方法已用于水样中痕量钒的测定。对于反应机理，本文也进行了探讨。

he chemiluminescence reaction of V(Ⅱ)-lucigenin system was examined by the flow injectionsystem with a Jones reductor.A new method for thedetermination of V on this basis is reported. Thedetection limit is 3×10￣(-10)g/mL V. The linear range is1×10￣(-9)～9 ×10￣(-5)g/mL V. The relative standarddeviation is less than 2%(for 1×10￣(-7)g/mL V,n=11).The method has been applied to determine V inwater samples.The reaction mechanisrn of V(Ⅱ)withlucigenin was also investigated.