实时监测阴离子表面活性剂在石英表面的吸附

In situ monitor adsorption of anionic surfactant ont o quartz surface

在 pH >2的水溶液中 ,石英表面带负电荷。当以Ca2 + 作为吸附桥时 ,阴离子表面活性剂能够吸附在石英表面上 ,以液隔电极式压电传感器实时监测该吸附过程中的质量变化 ,获得吸附动力学参数。

Quartz surface is charged negatively in aqueous soluti ons of pH>2. With the pre-adsorption of Ca 2+ as a bridge, anionic surfact ant can be adsorbed onto quartz surface. The mass change in the adsorption proce ss is monitored in situ by an electrode-separated piezoelectric sensor. The info rmation related adsorption is obtained.