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Glossary |
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| Term | Definition | Article | Siehe auch |
|---|---|---|---|
| PAH: Wikipedia: PAH |
Polycyclic aromatic hydrocarbons. A substance class of several hundred hydrocarbons with at least three condensed aromatic benzenoid rings. | POP | |
| pattern analysis: | Comparison of two different chromatograms produced with the same chromatographic method. | ||
| PCB: Wikipedia: PCB |
Polychlorinated biphenyls. A substance class of 209 organochlorine compounds based on the biphenyl molecular skeleton, that exhibit high persistence and chronic toxicity. | POP, dioxins | |
| peak: | The detector signal corresponding to a substance in a chromatogram. | ||
| permissible air concentration: Wikipedia: permissible air concentration |
Time-weighted average concentration of a chemical in air, that must not be exceeded during an exposure of 8 hours per day and a 40 h working week. | threshold limit value | |
| persistence: | The ability of a chemical to remain in the environment because of insufficient biotic and/ or abiotic degradation. | biological degradation potential | |
| pi-pi molecular interactions: | pi-pi molecular interactions are formed between molecules with conjugated pi-electron systems (color code: violet). | molecular interaction potential | |
| PND: Wikipedia: PND |
Phosphorus /nitrogen selective detector for the gas chromatography. | NPD | |
| POP: Wikipedia: POP |
Persistent Organic Pollutants. A substance class of especially persistent chemicals (12 different subclasses) | PAH, PCB | |
| product: Wikipedia: product |
Products are all compounds that are produced by a chemical reaction. More specifically, only the desired final product which is isolated and purified is called product. | by-product, co-product |