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:
“I live in my house as I live inside my skin: I know more beautiful, more ample, more sturdy and more picturesque skins: but it would seem to me unnatural to exchange them for mine.”
—Primo Levi (1919–1987)
“The real security of Christianity is to be found in its benevolent morality, in its exquisite adaptation to the human heart, in the facility with which its scheme accommodates itself to the capacity of every human intellect, in the consolation which it bears to the house of mourning, in the light with which it brightens the great mystery of the grave.”
—Thomas Babington Macaulay (1800–1859)