Glossary C
Deutsch: Chromatographie / Español: cromatografía / Português: cromatografia / Français: chromatographie / Italiano: cromatografia
Chromatography is a technique used for the separation, identification, and quantification of components in a mixture. It is widely employed in environmental analysis to detect and monitor pollutants in the environment.
Deutsch: Chrom / Español: cromo / Português: cromo / Français: chrome / Italiano: cromo
Chromium is a chemical element with the symbol Cr and atomic number 24. It is a hard, lustrous metal known for its high corrosion resistance and hardness. In the environmental context, chromium becomes significant due to its various states and impacts on ecosystems and human health.
Chromium sources of emissions include the Combustion of coal and oil, electroplating, vehicles, iron and steel plants, and metal smelters.
The emissions reflected in this assessment are based on state and local agency reporting of chromium as "chromium and compounds," individual chromium compounds and chromium ions. Because of the inconsistent reporting, all of the chromium was lumped together for dispersion modeling as "Chromium VI." EPA then based quantitative risk estimates on an assumption that 34 percent of the chromium is hexavalent chromium (which is the most toxic form) based on information from past inventorying efforts.
Deutsch: Chrom VI / Español: Cromo VI / Português: Cromo VI / Français: Chrome VI / Italiano: Cromo VI
Chromium VI in an environmental context refers to hexavalent chromium, a highly toxic form of chromium known for its detrimental effects on the environment and human health.
Deutsch: Chromosom / Español: Cromosoma / Português: Cromossomo / Français: Chromosome / Italiano: Cromosoma
Chromosome refers to the thread-like structures located within the nucleus of animal and plant cells, made of protein and a single Molecule of deoxyribonucleic acid (DNA). In the environmental context, chromosomes are crucial for understanding biodiversity, genetic variation, and the adaptation of species to their environments.
Deutsch: Chronik / Português: Crónica / Français: Chronique
A Chronic is Used to describe recurring symptoms or disease.
Chronic acidification: A chronic acidification is Generally refers to surface waters that remain acidified (ANC<0) regardless of variations in hydrologic conditions (precipitation, stream flow, etc.).