在催化显色体系中引入合适的活化剂能显著地提高其反应灵敏度，通过实验，我们观察到，乙醇对Ｃｕ－邻苯二酚－Ｈ２Ｏ２的催化显色反应有明显的活化增敏作用。研究了该体系的实验条件，并成功应用于食品和发样中痕量铜的测定。１　试剂与仪器７２３０型分光光度计；ｐＨＳ－２ In the catalytic chromogenic system, the introduction of a suitable activator can significantly improve the reaction sensitivity, through experiments, we observed that ethanol on Cu-catechol-H2O2 catalytic chromogenic reaction significantly sensitized activation. The experimental conditions of the system were studied and successfully applied to the determination of trace copper in food and hair samples. 1 Reagents and Instruments Model 7230 spectrophotometer; pHS-2