What are the imissions
Immissions are emissions that have come into contact with the environment. They are commonly stored in soils, plants and living organisms. Immissions concentrations are much lower than emission concentrations. It is divided into three basic categories, for solid, gaseous and radioactive imissions. Solid immissions are embodied mainly in dust particles and aerosols, respectively. Inorganic dust contains mainly metallic particles, fluorides or sulphates. Organic dust consists mainly of tar and pollen. Strong emissions are particularly harmful due to reduced visibility and negative effects on living organisms. At higher concentrations they can also cause corrosion. Gaseous imissions consist of many different elements. Most commonly the sulfur and nitrogen compounds of halogens. Their origin is different. They can produce coal-fired power plants, vehicle exhausts, or they can be produced by burning plastics. Gaseous emissions are very harmful and can also be carcinogenic. Radioactive immissions are very rare and occur only in accidents at nuclear facilities.