杂环三氮烯显色剂BTNPT的合成及其在分析中的应用研究

Study on Synthesis of a Triazene Chromogenic Reagent and Its Application in Analytical Chemistry

合成一种新的杂环三氮烯显色剂:1 (2 苯并噻唑) 3 (4 硝基苯) 三氮烯(BTNPT).研究试剂的结构、光度性质和在Na2B4O7 NaOH缓冲介质及有非离子表面活性剂Triton X100存在下,试剂与Hg的显色反应.该方法应用于废水样中Hg2+的测定,获得了较为满意的结果.

A new type of heterocycle triazenediyl color group reagent BTNPT was synthesized. Its structure and acidity constants were studied spectrophotometrically. This reagent is used as photometric reagents for Hg\+\{2+\}.In a buffer solution Na\-2B\-4O\-7NaOH, the color agent BTNPT reacts with Hg(Ⅱ) ion to form sensitive color complexes in the presence of surface active agent TritonX 100. The method has high sensitivity. We have used these reagents to determine the Hg\+\{2+\} in waste water successfully.