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2-(2-喹啉偶氮)-5-二甲氨基苯酚光度法测定铀的研究

Study on spectrophotometric determination of uranium in ore with 2-(2-quinolylazo)-5-dimthylaminophenol

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【Author】 LI Bi-yu~1,RUANG Qiong~1,HU Qiu-fen~2,YIN Jia-yuan~2,YANG Guang-yu~2 (1.Department of Chemistry,Yunnan normal univerisit;2.Department of Chemistry,Yunnan Univwrsity Kunming 650091)

【机构】云南师范大学化学系；玉溪师范学院化学系；云南大学化学系；云南大学化学系云南昆明650031；云南昆明650031；云南玉溪653100；云南昆明650091；云南昆明650091；

【Abstract】 A new chromogenic reagent 2-（2-quinolylazo）-5-Dimthylaminophenol（QADMAP）was synthesized,and its structure was verified by elemental analysis,infrared spectrum,（）¹H nuclear magnetric resonance spectrum,and mass spectrum.The color reaction of QADMAP with uranium was studied.In the presence of pH=7.8 buffer solution,when fluorin ion and TritonX-100 medium existed,QADMAP can react with uranium and fluorin to form a stable 1∶1∶1 purple complex（F∶QADMAP∶U（VI））.The molar absorptivity is 1.12×10⁵L·mol^-1·cm^-1 at 590 nm.Beer’s law is obeyed in range of 0～50 μg/25ml.This method was applied to the determination of uranium in ore with good results.更多还原

【关键词】 2-(2-喹啉偶氮)-5-二甲氨基苯酚；铀；光度法；
【Key words】 2(2-quinolylazo)-5-dimthylaminophenol； uranium； spectrophotometry；

【基金】云南省教育厅科研基金资助项目 (4 0 11114 3 )

【文献出处】化学研究与应用 ,Chemical Research and Application , 编辑部邮箱 ,2005年02期

【分类号】O657.32
【被引频次】4
【下载频次】63

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