Anion Exchange Capacity
Similar to the CEC, the Anion Exchange Capacity is a measurement of the positive charges in soils affecting the amount of negative charges which a soil can absorb. There are relatively few anions that are restrictive in agriculture, but they are important, such as sulfur or phosphorus. The anion lyotrophic series is:
H2PO4- > SO4-2 > NO3- > Cl-
In contrast to CEC, AEC generally will decrease when pH drops and increase when pH rises.
Read more about this topic: Cation-exchange Capacity
Famous quotes containing the words exchange and/or capacity:
“The press and politicians. A delicate relationship. Too close, and danger ensues. Too far apart and democracy itself cannot function without the essential exchange of information. Creative leaks, a discreet lunch, interchange in the Lobby, the art of the unattributable telephone call, late at night.”
—Howard Brenton (b. 1942)
“To succeed in the other trades, capacity must be shown; in the law, concealment of it will do.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)