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前言钍、铀、铟、铅和N-亚硝基苯胲胺及铵盐的络合物极谱波已有报导。我们对铬在N-亚硝基苯胲铵体系中的极谱行为进行了研究。发现N-亚硝基苯胲铵与铬酸根络合物在氯化铵-氢氧化铵的碱性介质中,产生一个灵敏度很高的极谱催化波。通过实验选定了示波极谱测定铬酸根最佳底液条件为0.1M氯化铵-0.5％氢氧化铵-0.01％N-亚硝基苯胲铵。波高和浓度线性范围为0.002—0.06微克/毫升。在经典极谱仪上测定铬酸根最佳条件为0.1M氯化铵-0.75%氢氧化铵-0.035％N-亚硝基苯胲铵。波高和浓度线性范围为
Preface Polarographic complexes of thorium, uranium, indium, lead, and N-nitrosophenyl phenylalanine and ammonium salts have been reported. We investigated the polarographic behavior of chromium in N-nitrosophenylbenzene ammonium system. It was found that N-nitrophenylbenzimidate and chromate complex in a basic ammonium chloride-ammonium hydroxide medium produced a highly sensitive polarographic catalytic wave. Oscillopolarographic determination of the optimum conditions for the determination of chromic acid by the end of the bottom conditions for the 0.1M ammonium chloride - 0.5% ammonium hydroxide - 0.01% N-nitrosophenyl ammonium. The linear range of wave height and concentration is 0.002-0.06 μg / ml. The optimum conditions for the determination of chromate by classical polarography were 0.1 M ammonium chloride-0.75% ammonium hydroxide-0.035% N-nitrosophenyl ammonium nitrate. The linear range of wave height and concentration is