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合成了吡啶偶氮类显色剂7-(2-吡啶偶氮)-8-羟基喹啉,用红外光谱及磁共振进行了结构表征,并研究了其与镍的显色反应。结果表明:该显色剂与镍在pH=5.0的HAc-NaAc缓冲介质中形成稳定的紫色络合物,其组成比为2∶1,λmax=560 nm,表观摩尔吸光系数为1.873×104L.mol-1.cm-1,镍质量浓度在01.2μg/mL范围内符合比尔定律。
Abstract：A new chromogenic reagent,7-(2-pyridylazo)-8-hydroxyquinoline was synthesized.The reagent structure was identified by IR spectroscopy and 1HNMR spectroscopy.Optimum conditions of the color reaction of 7-(2-pyridylazo)-8-hydroxyquinoline with Ni(Ⅱ) were studied.It was found that the color reagent reacted with Ni(Ⅱ) to form a stable purple complex in HAc-NaAc buffer solution at pH=5.0.The maxiumum absorption wavelength and apparent molar absorptivity were found to be at 560 nm and 1.873×104 L·mol-1·cm-1,respectivelv.Beer's law was obeyed in the range of 0～1.2 μg/mL for Ni(Ⅱ).
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基本信息:
DOI：10.13355/j.cnki.sfyj.2011.03.004
中图分类号:O657.3;TG115.33
引用信息:
[1]田松涛,于秀兰,徐红岩.7-(2-吡啶偶氮)-8-羟基喹啉的合成及其与镍的显色反应研究[J].湿法冶金,2011,30(03):255-257.DOI:10.13355/j.cnki.sfyj.2011.03.004.
基金信息:
辽宁省教育厅科学研究资助项目(20060666)