酸性介质中DSPCF与微量氧化性阴离子褪色反应的研究

Study on Determining the Oxidative Anion by Decolor Reaction with DSPCF in Acid Medium

本文报道了DSPCF在酸性介质中与氧化性阴离子的反应,氧化性阴离子将其四氮基转化为无色氧化型而使红色逐渐减褪.利用此褪色反应,探讨了测定 NO_2^-、NO_3^-、IO_3^-、BrO_3^-、IO_3^-、IO_4^-、Cr_2O_7^(2-)、MnO_4^-的条件,其表观摩尔吸光系数达10~4数量级,提出了测定氧化性阴离子的新方法.可用来测定饮用水、池塘水、工业废水和化学试剂中一些氧化性阴离子的含量.

In this paper,the decolor reactjon of DSPCF with the Oxidative anion in acid medium is reported Using the decolor reaction,we studiedthe conditions of determining NO_2,NO_3,ClO_3,BrO_3,IO_3,IO_4,Cr_2O_7MnO_4^-,established a new method of determining the oxidative anion,theirmolar absorption coefficient being about 10~4.The method can be used todetermine the oxidative anion in drinking water,waste waster and chemical reagents.