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1-偶氮苯-3-(5-氯-2-吡啶)-三氮烯的合成及与锌的显色反应
Synthesis of A New Reagent 1-Azobenzene-3-(5-Chloro-2-Pyridyle)-Triazene and Its Color Reaction with Zinc
【摘要】 合成了新显色剂1-偶氮苯-3-(5-氯-2-吡啶)-三氮烯。在表面活性剂OP存在下,pH为10.5—11.5的N a2B4O7-N aOH缓冲溶液中,新显色剂1-偶氮苯-3-(5-氯-2-吡啶)-三氮烯与锌发生显色反应,生成4∶1的红色配合物。配合物的最大吸收峰位于530nm,表观摩尔吸光系数为1.25×105L.m o-l 1.cm-1,Zn2+浓度在0—480μg/L范围内遵守比耳定律。测定废水中微量锌,结果令人满意。
【Abstract】 The 1-azobenzene-3-(5-chloro-2-pyridyle)-triazene(ABCPDT) as a chromogenic reagent was synthesized and its color reaction with zinc has been investigated.In the presence of the surfactan OP,and in the Na2B4O7-NaOH medium of pH 10.5—11.5,ABCPDT forms a 4∶1 red complex with Zn(Ⅱ).The apparent molar absorptivity of the complex is 1.25×105L·mol-1·cm-1 at 530nm(λmax).The Beer’s law is well obeyed in the range of 0—480μg/L of zinc.The method was applied to the direct determination of zinc in the wastewater with satisfactory results.
【Key words】 1-Azobenzene-3-(5-Chloro-2-Pyridyle)Triazene; Zinc; Color Reaction; Spectrophotometry.;
- 【文献出处】 光谱实验室 ,Chinese Journal of Spectroscopy Laboratory , 编辑部邮箱 ,2006年06期
- 【分类号】O657.3
- 【被引频次】4
- 【下载频次】93