Panamera Turbo (970) V8-4.8L Turbo (2011)
PE
See: Polyethylene.
Pentachlorophenol
See: PCP.
Perborate
Sodium, important component of washing agents to bleach soiled spots. Borates with bound H2O2.
Percutaneous
Term that denotes uptake through the skin.
Persistence
Perseverance, tenacity, stability of chemical substances against environmental effects (decomposition).
Petrol separator
Device for separating petrol from waste water, as an aid in purification plants and for reducing the risk of explosions in sewage systems.
pH value
The negative decade logarithm of hydrogen ion activity. It serves to denote the hydrogen or hydroxyl ion concentration in aqueous solutions and
therefore identifies the basic or acidic behavior of these solutions. Measurement is carried out using an electrical pH meter.
Phon
Measure of the Loudness level. It is practically obsolete and has been replaced by sound pressure level measured in Decibel (A).
Phosgene
Colorless gas, which smells like hay, used in the manufacture of paints and plastics among other things. Phosgene is a strong lung poison.
Phosphate stripping
Combined biological and chemical procedure for reducing phosphorous compounds from sewage water.
Phosphates
Substances with very different structures and effects:
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inorganic salts of orthophosphoric and polyphosphoric acids (used in fertilizers, washing agents, animal fodder and in the paints industry as
corrosion protection pigments in certain paint substances)
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simple phosphoric acid triaryl esters and trialkyl esters, e.g. triphenyl phosphate (softeners, flame retardants)
-
Phosphoric acid ester with special structure modified for specific biological effect, e.g. parathion, dimethoate (insecticides, acaracides), natural
phosphates.
Phosphates are rarely found in the groundwater. The high content of inorganic phosphates often found in bodies of water must stem from sewage water.
The phosphates in sewage water can be traced back to fecal matter, fertilizer wash off, and cleaning agents, each making up for about one-third of the
phosphate.
Physikalisch-Technische Bundesanstalt (German Federal Institute for Physical Technology)
See: PTB.
Pigments
Soluble organic coloring agents in solvents and/or binders. A distinction is made between natural pigments (of animal or plant origin) and synthetic
pigments.
Plasticizer