采用失重法、电化学极化曲线和电化学阻抗谱比较了0.5 mol/L HCl溶液中传统缓蚀剂苯并三唑(BTA)和辛酰谷氨酸、DL-苏氨酸、DL-丝氨酸等氨基酸类物质对铜的缓蚀作用.挂片试验和阻抗谱表明,10-3 mol/L的辛酰谷氨酸对铜的缓蚀作用最好,缓蚀率可以达到82.7%.从电化学极化曲线来看,这几种氨基酸类缓蚀剂均是阴极型缓蚀剂.在浓度10-5～10-3 mol/L范围内随着辛酸谷氨酸浓度升高缓蚀效果加强.
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