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Application of Electroacoustic Effects in The Determination of Particle Properties LI Yan Abstract Determination of particle properties from electroacoustic effects is a new technique. The two effects of measurements that are possible, They are colloid vibration potential(CVP) and electrokinetic sonic amplitude(ESA). The physical mechanisms that give rise to these effects and their reciprocal relation were summarized. For spherical particles with thin double layers, their dynamic mobility from which the size and charge of particles determined can be formulated from the ESA signal. Electroacoustical method is a powerful tool for studying the electric properties of interfaces and colloidal stability. Key words Electroacoustic effects, Particle properties, Size and charge of particles, Colloid vibration patential (CVP), Electrokinetic sonic amplitude(ESA)
电声效应在测定胶粒性质中的应用 李燕 摘要
将电声效应用于测定胶粒性质是一项新的研究，电声效应包括两种效应，即CVP和ESA效应。本文综述了这两种效应的产生机理及相互关系，并指出对于具有薄双电层的胶粒而言，通过测量ESA声波信号可以推导胶粒动力淌度，从而确定胶粒的大小和电荷。最后指出电声效应在测定胶粒性质方面有广阔的应用前景。 李燕 女，26岁，硕士，助教，从事胶体和界面化学的研究。 |