石英晶体微天平 QCM 应用于真空或气相实验作为灵敏的质量检测器已有较长时间,但直到80年代中期才将液相中的 QCM 同电化学方法联用而形成电化学石英晶体微天平 EQ-CM.EQCM 由压电石英晶片及适当设计的振荡电路构成,在晶片两面沉积了金属膜电极,一个电极在气相,另一个电极在溶液中作电解池工作电极.对刚性沉积物,晶体振荡频率增量△f 正比于工作电极上沉积物在单位面积 A 上的质量改变△m.只要△f 小于晶体振 Quartz crystal microbalance QCM used in vacuum or gas phase as a sensitive quality detector has been a long time, but until the mid-80s only QCM in the liquid with electrochemical methods to form electrochemical quartz crystal microbalance EQ -CM.EQCM consists of a piezoelectric quartz wafer and an appropriately designed oscillating circuit with metal film electrodes deposited on both sides of the wafer, one electrode in the vapor phase and the other electrode in the solution for the cell working electrode. For rigid deposits, crystal oscillation The frequency increment Δf is proportional to the mass change Δm of the deposit on the working electrode per unit area A. As long as Δf is smaller than the crystal oscillator