Toxicology is the study of the impacts of chemicals (as drugs, food additives and environmental contaminants) on both humans and the environment. The Industrial Revolution of the mid-19th century released many naturally-occurring chemicals into the environment in unprecedented amounts and resulted in the production of thousands of new substances. Results from toxicity studies support drug, food and industrial chemical regulation, remediation, and production. Although past practices focused on exposures of high doses to single chemicals practitioners of the science have recognized the importance of evaluating the impacts of low doses, and chemical mixtures as more sensitive biochemical and genomic methods are incorporated into chemical evaluation and regulation.
A single fragrance in a product can contain a mixture of hundreds of chemicals, some of which react with ozone in ambient air to form dangerous secondary pollutants.This...
Tamarix controlLast Updated on 2013-06-17 at 17:10
Tamarix control is a significant invasive species issue in the western USA, especially in the American southwest. The woody plant genus Tamarix, also , also known by the... More »
NanoparticlesLast Updated on 2013-06-12 at 14:24
Nanoparticles are defined by an upper particle size limit of 100 nanometers (or up to 100 billionths of a meter). This definition may change as there are some scientists who... More »
Redwood SorrelLast Updated on 2013-05-20 at 18:13
Redwood Sorrel (Oxalis oregana)
Redwood Sorrel is in the Oxalidaceae, the wood sorrel family, a relatively small family with three genera and 875 species of mostly tropical... More »
CadmiumLast Updated on 2013-05-04 at 14:10
Cadmium is a very soft, silvery-white metallic element. Its atomic number is 48, with the atomic symbol Cd. It is so soft that it can be cut with a knife. Cadmium... More »
Absorption of toxicantsLast Updated on 2013-05-02 at 19:02
Absorption is the process whereby toxicants gain entrance to the body. Ingested and inhaled materials, nonetheless, are considered outside the body until... More »