Co-aggregation of mixture components of montmori llonite, kaolinite and humus

Eur. J. Soil Sci

Y Zhang，A He，R Tian，S Yang，H Li

Soil particle aggregation is closely related to soil quality and pollutant migration in the environment. Soil is a naturally complex system with multi-components, including different organic and inorganic particles. However, current studies with respect to particles aggregation by dynamic light scattering (DLS) have centered on single-component particles. Therefore, the application of DLS to mixture components is an important issue in soil science research. In this study, montmorillonite (Mont), kaolinite (Kaol) and humic acid (HA) particles were mixed in different mass ratios to form two- and three- mixture components, and then the aggregation kinetics of the mixture components in KNO3 solutions were studied by DLS. The results showed that, (1) for any given mixing ratio of two- and three-mixture components particles, there was only one CCC value observed for the mixture components.