iStockphoto.com/Andrea Laurita. The BRYCS Clearinghouse is an online collection of resources related to refugee and immigrant children and families. It is geared towards front-line workers, program planners, and administrators as well as researchers and policy-makers.
Define cation exchange: ion exchange in which one cation (as sodium or hydrogen) is substituted for one or more other cations (as calcium andâ¦ ion exchange in which one cation (as sodium or hydrogen) is substituted for one or more other cations (as calcium and magnesium in hard water)â¦ See the full definition since 1828
(Mn2+), zinc (Zn 2+) and copper (Cu). The. capacity of the soil to hold on to these cations. called the cation exchange capacity (CEC). These cations are held by the negatively. charged clay and organic matter particles in. the soil through electrostatic forces (negative. soil particles attract the positive cations). The. cations on the CEC of the soil particles are. easily exchangeable with other cations and as. a result, they are plant available.