The BTA and MBT adsorption on copper in 0.05mol/L NaHCO3 solution also obeys the Frumkin adsorption isotherm, the anodic dissolution of copper is determined by both the electrochemical step and diffusion step .

• BTA、MBT在0.；05mol/L碳酸氢钠溶液中在紫铜表面的吸附也遵从Frumkin等温吸附；紫铜的阳极溶解速度受电化学步骤和扩散步骤混合控制。