Glossary P
PFC, or Perfluorinated Compounds, in the environmental context, refers to a group of synthetic chemicals containing fluorine atoms that are known for their unique properties, including water and oil repellency, and resistance to heat and chemical reactions. PFCs have been widely used in various industrial and consumer applications, but they are of concern due to their persistence in the environment and potential health risks.
Deutsch: Photokatalyse / Español: Fotocatálisis / Português: Fotocatálise / Français: Photocatalyse / Italiano: Fotocatalisi
Photocatalysis is a chemical process that utilizes light energy to accelerate a reaction in the presence of a catalyst, typically a semiconductor material. This phenomenon has gained significant attention in environmental applications due to its potential to degrade pollutants, split water for hydrogen production, and facilitate sustainable chemical transformations without generating harmful byproducts. Unlike traditional catalysis, photocatalysis leverages the unique electronic properties of semiconductors to drive redox reactions under light irradiation.
Deutsch: Photometer / Español: Fotómetro / Português: Fotômetro / Français: Photomètre / Italiano: Fotometro
A photometer is an essential analytical instrument used in environmental science to measure the intensity of light or the optical properties of solutions. It plays a critical role in quantifying pollutants, assessing water quality, and monitoring atmospheric conditions by detecting variations in light absorption, transmission, or emission. Photometers are widely employed in both laboratory and field settings due to their precision, versatility, and ability to provide rapid results.