本文用二乙氨基二硫代甲酸钠(NaDDTC)为螯合剂,将铜、镍、锌等离子转变为螯合物,萃取分离后注入填充有化学健合固定相的反相色谱柱,用几乎无腐蚀性的甲醇水溶液为洗提剂,用紫外检测器检测分离后的螯合物。在研究了分离条件及消除干扰的基础上提出一个同时测定铝合金中微量铜、镍、锌的反相高效液相色谱法。 In this paper, sodium diethyldithiocarbamate (NaDDTC) is used as a chelating agent to convert copper, nickel and zinc ions into chelates, extracted and separated into a reversed-phase column filled with a chemically stable stationary phase, Aqueous methanol was used as the eluent and the isolated chelate was detected with a UV detector. On the basis of studying the separation conditions and eliminating the interference, a reversed-phase high performance liquid chromatography method for simultaneous determination of trace amounts of copper, nickel and zinc in aluminum alloy was proposed.