In situ processes are understood as decontamination procedures in the course of which soil or groundwater pollutants are eliminated directly at the site of contamination.
Intergovernmental Panel on Climate Change IPCC is a committee established in 1988 by the UN Environment Programme (UNEP) and the World Meteorological Organization (WMO). Its main task is to assess global warming risks and to collate strategies to deal with the impacts of climate change.
Intergovernmental Panel on Biodiversity and Ecosystem Services
Isotopes are nuclides with the same atomic number but different mass numbers. Isotopes are located at the same position (Gr. ισο [iso] – gleich, τόπος [topos] – place) in the periodic table (which is why they possess the same atomic number). Isotopes of an element are distinguished from each other by different numbers of neutrons in the atomic nucleus. Radioactive isotopes are instable and decay under the emission of radiation.
These are investigation methods applying artificially or using naturally occurring stable and/or radioactive isotopes.