leach out of

leach out of something

[for a substance] to seep or drain out of something. All the nutrients leached out of the soil and nothing would grow. The phosphorus leached out of the soil after a few years.
See also: leach, of, out
References in periodicals archive ?
Hexavalent chromium from CCA is sometimes released to the environment, however; if during the pressure-treating process the hexavalent chromium isn't fixed completely and converted to the more benign trivalent form, it can leach out of the wood in its original form.