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 s...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.展开更多
2-（2-quinolinylazo）-1,3-diaminobenzene（QADAB）was synthesized,and its color reaction with copper（Ⅱ）was studied.In the medium of CTMAB and presence of pH=4.0 buffer solution.QADAB could react with copper（Ⅱ）to ...2-（2-quinolinylazo）-1,3-diaminobenzene（QADAB）was synthesized,and its color reaction with copper（Ⅱ）was studied.In the medium of CTMAB and presence of pH=4.0 buffer solution.QADAB could react with copper（Ⅱ）to form a violet stable 2∶1 complex.The molar absorptivity of the complex is 8.11×104L·mol-1·cm-1 at 555 nm.Beer’s law was obeyed in range of 0～20 μg/25mL.This method may be applied to the determination of copper in environmental samples with good results.展开更多
文摘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.
文摘2-（2-quinolinylazo）-1,3-diaminobenzene（QADAB）was synthesized,and its color reaction with copper（Ⅱ）was studied.In the medium of CTMAB and presence of pH=4.0 buffer solution.QADAB could react with copper（Ⅱ）to form a violet stable 2∶1 complex.The molar absorptivity of the complex is 8.11×104L·mol-1·cm-1 at 555 nm.Beer’s law was obeyed in range of 0～20 μg/25mL.This method may be applied to the determination of copper in environmental samples with good results.
