| 1-偶氮苯-3-(5-氰-2-吡啶)-三氮烯的合成及其与锌的显色反应 |
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| 引用本文： | 周潮晖.1-偶氮苯-3-(5-氰-2-吡啶)-三氮烯的合成及其与锌的显色反应[J].广东微量元素科学,2008,15(5). |
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| 作者姓名： | 周潮晖 |
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| 作者单位： | 浙江丽水市环境监测中心站,浙江,丽水,323000 |
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| 摘 要： | 报道了新显色剂1-偶氮苯-3-(5-氰-2-吡啶)-三氮烯的合成。在pH 10~12的硼砂-氢氧化钠缓冲溶液中,NP-40表面活性剂存在下,该试剂与锌发生显色反应,生成3∶1的红色配合物。配合物的最大吸收峰位于530 nm,表观摩尔吸光系数为1.52×105L.mol-1.cm-1。Zn2+质量浓度在0~0.48 mg/L范围内遵守比尔定律。用该法测定人发中微量锌,结果令人满意。
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| 关 键 词： | 1-偶氮苯-3-(5-氰-2-吡啶)-三氮烯 锌 显色反应 |
Synthesis of the New Reagent 1-azobenzene-3-(5- cyano -2-pyridyl)-triazene and Its Color Reaction with Zinc |
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| ZHOU Chaohui.Synthesis of the New Reagent 1-azobenzene-3-(5- cyano -2-pyridyl)-triazene and Its Color Reaction with Zinc[J].Trace Elements Science,2008,15(5). |
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| Authors: | ZHOU Chaohui |
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| Institution: | ZHOU Chaohui(Lishui Environmental Monitoring Station; Zhejiang; Lishui 323000; China); |
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| Abstract: | The synthesis of a chromogenic reagent 1-azobenzene-3-(5-cyano-2-pyridyl)-triazene(ABCPDT) and its color reaction with zinc was investigaed.In the presence of the surface active agent NP-40,ABCPDT formed a red complex with Zn(Ⅱ) in the Na2B4O7-NaOH medium of pH 10~12.Meanwhile,the mohar ratio of Zn(Ⅱ) to ABCPDT was 3∶1.The apparent molar absorbtivity of the complex was 1.52×105 L·mol-1·cm-1 at 530 nm(λmax).It was well obeyed of Beer s law in the range of 0～0.48 mg/L for zinc.When this method was applied to ... |
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| Keywords: | 1-azobenzene-3-(5-cyano-2-pyridyl)-triazene zinc color reaction |
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