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研究了镉与紫脲酸铵形成络合物的极谱性能,计算其络合物稳定常数和扩散系数。镉与紫脲酸铵单独存在于所研究的缓冲液中,分别在-0.45V和-0.1OV各产生良好的极谱还原波,但当它们共存于试液中时,则产生四个极谱还原波,分别在-0.1OV,-0.25v,-0.45v和-0.60V。实验证明,第一波为自由紫脲酸根的还原波,第二波为键合于镉络合物的紫脲酸根的还原波,第三波为自由镉离子还原波,第四波则为键合于紫脲酸络合物的镉的还原波。对络合物形成机理和电极过程进行了研究。
The polarographic properties of complexes formed by cadmium and ammonium urea were studied. The stability constants and diffusion coefficients of the complexes were calculated. Cadmium and ammonium urethane were present alone in the buffer under study, yielding good polarographic reduction waves at -0.45V and -0.1OV, respectively, but when they coexist in the test solution, four polarographic spectra Reduction wave, respectively -0.1OV, -0.25v, -0.45v and -0.60V. The experimental results show that the first wave is the reduction wave of free purpurium, the second wave is the reduction wave of the uraziridate bonded to the cadmium complex, the third wave is a free cadmium ion reduction wave, and the fourth wave is the bond The reduction wave of cadmium that is used in the complex of uric acid. The complex formation mechanism and electrode process were studied.