Chemistry property
type: Concept
narrower: Cation exchange capacity

Cation exchange capacity
modified: 2022-03-10T14:34:42
narrow match: http://vocabs.lter-europe.net/EnvThes/30067
related: Soil variable
broader: Chemistry property
in scheme: ozcar-theia
definition: [Wikipedia] Cation-exchange capacity (CEC) is a measure of how many cations can be retained on soil particle surfaces.[1] Negative charges on the surfaces of soil particles bind positively-charged atoms or molecules (cations), but allow these to exchange with other positively charged particles in the surrounding soil water.[2] This is one of the ways that solid materials in soil alter the chemistry of the soil. CEC affects many aspects of soil chemistry, and is used as a measure of soil fertility, as it indicates the capacity of the soil to retain several nutrients (e.g. K+, NH4+, Ca2+) in plant-available form. It also indicates the capacity to retain pollutant cations (e.g. Pb2+).
type: Concept
type: Property
created: 2022-02-07T17:00:00

Soil variable
type: CategoryOfVariable
type: Concept
related: Cation exchange capacity