It does not remain in the body due to its breakdown and removal. Aniline can evaporate when exposed to air. It dissolves when mixed with water. Most releases of aniline to the U.S. environment are to underground injection sites and to air. In air, aniline breaks down to other chemicals.
Sunlight also breaks down aniline in surface water and in soil.
Microorganisms that live in water and in soil can also break down aniline. Because it is a liquid that does not bind well to soil, aniline that makes its way into the ground can move through the ground and enter groundwater. Plants and animals are not likely to store aniline. The effects of aniline on human health and the environment depend on how much aniline is present and the length and frequency of exposure. Effects also depend on the health of a person or the condition of the environment when exposure occurs.