Aggregated exposure is the exposure to one single chemical via all exposure routes (dermal, oral and inhalatory) and from different sources (for example several different consumer products and/ or in combination with food).
Nanotechnologies and nanomaterials are applied in consumer products. Examples of consumer products that are claimed to contain nanoparticles or produced using nanotechnology, are the use of titanium dioxide in sunscreens, cerium oxide nanoparticles in diesel for combustion improvement and antibacterial properties of silver nanoparticles in wound dressings, textiles or large appliances.
Exposure factors are actions and media that bring us in contact with environmental agents. Important exposure factors are for instance consumption of food and beverages, housing conditions, time use in micro-environments, but also inhalation rates and consumer products use. Also activities of people contribute to the exposure to environmental agents. Two major initiatives are mentioned that describe exposure factors for the European as well as the American population in the navigation section on the left.