Adsorption coefficient
The adsorption coefficient K oc indicates the ratio of the concentration of the substance in the soil (c soil ) to the concentration of the substance in the aqueous phase (c water ) in the adsorption equilibrium with regard to the proportion of organic carbon in the soil.
It indicates the adsorption and desorption properties of substances in the environment. Adsorption is the accumulation / enrichment of substances on soil surfaces, desorption is the dissolution / removal of substances from soil surfaces. In the soil, the substance adsorbs on the organic carbon compounds it contains. The two sorption processes are coupled with one another and are determined by various parameters such as B. the climatic conditions, the soil conditions and the physico-chemical properties of the substance influenced.
It is calculated by the formula:
- K oc = c soil / c water
Individual evidence
- ↑ a b Trade Association of the Construction Industry: Adsorption coefficient Koc | BG BAU - Professional Association of the Construction Industry , accessed on March 9, 2019