Soil adsorption is the process by which substances in soil or other porous materials are attracted to and held on the surface of soil particles. This can include various contaminants such as heavy metals, organic compounds, and nutrients. Soil adsorption plays a crucial role in determining the fate and transport of these substances in the environment. Researchers study soil adsorption to understand how different soil properties affect the ability of soils to adsorb contaminants, and how this impacts soil quality and water quality. By studying soil adsorption, researchers can develop strategies for mitigating the effects of contamination and improving soil and water quality.