Southwest University

Jie Hou

Hang Li

Hualing Zhu

Laosheng Wu

Rui Li

Zhenlun Li

Xinmin Liu

A system and process for determining and analyzing surface property parameters of a substance based on kinetic method is provided. The system comprises a sample processing system and a detection system. The sample processing system includes a reactor (), a collector for liquid to be tested (), and a container for liquid to be tested (). The detection system includes a detecting electrode (), a concentration and activity operator, a kinetic data processor, a surface property operation module, and a result output module. The process comprises: having the substance to be tested to be treated with an electrolyte solution, measuring activity of liquid to be tested upon reaction at a pre-set time interval, and processing with the kinetic data processor and the surface property operation module, so as to obtain surface property parameters of the substance to be tested. The present invention adopts kinetic method of ion exchange to overcome the issues associated with long reaction equilibrium time, not easy to determine equilibrium and not easy to accurately determine the value of m. Five parameters of the substance surface property can be calculated with only intercept and gradient of the linear regression equation obtained from the kinetic data, and the total amount of surface charge can also be directly determined.

System and process for determining and analysing surface property parameters of substance based on kinetic method

A method for measuring surface property parameters of a material comprises: performing saturation processing on a surface of a material; mixing the material which has been processed by saturation with an indicating electrolyte solution; after the mixture solution achieves an balance by ion exchange, measuring the balanced concentration values of positive ions of the indicating electrolyte and H+ in the mixture solution; according to the balanced concentration values of positive ions of the indicating electrolyte, calculating surface potential of the material; and according to the surface potential of the material, calculating specific surface area and surface charge density of the material; according to surface charge density of the material, calculating surface electric field intensity; according to surface charge density and specific surface area of the material, calculating total surface charge of the material. A system for measuring surface property parameters of a material can be based on the method.

Substance surface property parameter measurement method and substance surface property parameter analysis system thereof

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Chongqing, China

Jie Hou