EXPOSURE PATHWAYS

Humans are exposed to elements in the environment through three pathways.
Long-term (or chronic) exposure to certain elements can lead to human health
problems.

       1.  INGESTION

            The intake of substances contained in food or drink  
 

  
       2.  INHALATION

            The intake of substances contained in the air we breathe

 

       3.  DERMAL CONTACT 

            Absorption of substances that come in contact with skin