carbon

Organic carbon in aquifer

The carbon content in the aquifer is used to compute a pesticide's Kd value, or distribution coefficient, which is a measure of how tightly a pesticide binds to soil particles. Kd values are important for understanding how pesticides move through the environment.

A higher carbon value increases the pesticide partition coefficient Kd, which increases retardation/sorption behavior and generally reduces pesticide movement with aquifer flow and seepage.