Cayenne GTS (9PA) V8-4.8L (2008)
nuisance to the general public or the neighborhood due to type, magnitude or duration. See: Emissions.
Immission load
The negative effect of immissions on the environment. See: Air TI.
Immission measurement
Long-term or short-term recording of immissions carried out using stationary or mobile facilities especially in industrial areas and large cities.
Immission values
Abbreviation: IV. The concentration values for the long-term (IV1) and short-term (IV2) effects of air pollution as specified in the Air TI.
Immunity
The resistance of living organisms (human, animal, plant) against certain poisons or infections.
Impurities
Undesired, subsequently added admixtures; they often can not be completely removed in the manufacturing or cleaning process, but they can also be
added on purpose to improve properties (e.g. doping of semiconductor substances). Some of the substances considered to be impurities occur as natural
impurities. See: Dirt.
Indifferent substances
Substances that are not active in chemical processes or which only react when subjected to specific, often artificial conditions (e.g. glass, porcelain, V2A
steel, synthetic resins, inert gases, nitrogen, etc.).
Industrial areas
Areas with a strong concentration of industrial plants due to good location conditions (raw materials, situation with regards to road and rail links)
characterized by high population density and urbanization. Industrial areas in the Federal Republic of Germany include the Rhine-Main region.
Industrial estate
Development area in which commercial enterprises which are not significantly intrusive can be located. See: Industrial areas.
Industrial medicine
Deals with working people and their activities at the workplace. Modern industrial medicine attempts to adapt working conditions to suit humans.
Industrial medicine also covers work hygiene and is based on industrial physiology and psychology.
Industrial waste
Industrial waste refers to waste products resulting from production, which can not be reused in the production process. See: Special waste, Waste.
Industrial water
Raw water, e.g. ground water or surface water, treated in a variety of ways, depending on its technical application - e.g. as coolant, boiler feed water.
Industrial water is not drinking water.
Inhibitors
Substances that inhibit or slow down a reaction.
Ion exchanger
Inorganic or organic water-insoluble bodies that are part of the atom groups, the ions of which can be exchanged for other ions (anion or cation
exchanger), for example in water softening (exchanger resins), in medicine (ion substitution) or sewage treatment.
Ionization
Also: ion formation. Formation of Ions from atoms or atom groups, for which a certain level of ionization energy is required. This energy can be
provided by collision with fast particles such as electrons, ions, collision ions, by temperature, temperature ions, ionizing radiation, or photo-ions.