تعريف cation exchange في الإنجليزية الإنجليزية القاموس.
(Kimya) A chemical process in which cations of like charge are exchanged equally between a solid, such as zeolite, and a solution, such as water. The process is often used to soften water
(Bilim, İlim) In soil science, cation exchange capacity (CEC) is the capacity of a soil for ion exchange of positively charged ions between the soil and the soil solution. A positively-charged ion, which has fewer electrons than protons, is known as a cation due to its attraction to cathodes. Cation exchange capacity is used as a measure of fertility, nutrient retention capacity, and the capacity to protect groundwater from cation contamination