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Sommer等曾研究了茜素红S与铍、铝、镓等的螯合物的微分脉冲极谱行为,并利用茜素红S的配位体催化作用制定了测定镓和铟的方法。随后莫茂生报道了在茜素红S存在下用单扫极谱(导数波)测定水和二氧化硅中痕量铝的方法,并在文中指出镓、铟亦能产生相应的单扫导数极谱波,但上述作者都没有对有关电极过程的机理作进一步的研究,我们在研究稀土—茜素红S络合吸附波机理的基础上,考虑到与稀土离子不同,铟(Ⅲ)可在滴汞电极上还原,因而进一步对铟(Ⅲ)—茜素红S的极谱还原机理作了研究。
Sommer et al. Studied the differential pulse polarography of alizarin red S chelates with beryllium, aluminum, gallium and so on, and developed the method for the determination of gallium and indium using the alizarin red S ligand catalysis. Then Mo Mao students reported in the presence of alizarin red S single-sweep polarographic (derivative wave) Determination of trace amounts of water and silica in the aluminum, and in the paper pointed out that gallium, indium can also produce the corresponding single-scan pole However, none of the above-mentioned authors further studied the mechanism of the electrode process. Based on the study of the complexation adsorption wave mechanism of rare earth-alizarin red S, considering that unlike indium ions, indium (III) The reduction of indium (Ⅲ) - alizarin red S by polarographic reduction was studied.