The references Screening database and CLRTAP are no longer updated and have been removed from PRIO

The Screening database was a database administered by IVL Swedish Environmental Institute on behalf of the Swedish Environmental Protection Agency. The database contained screening data of environmental pollutants from the national environmental monitoring program for the years 1849 - 2016. The screening database at IVL Swedish Environmental Institute is no longer updated. The Swedish Geological Survey (SGU) is by the Swedish Environmental Protection Agency commissioned as new national data host ​​for environmental pollutants. The commissioning of a new environmental pollutant database is planned for 2022. In the new environmental pollutant database, all environmental monitoring data from screening of environmental pollutants, environmental pollutants in biota and metals and organic environmental pollutants in sediments will be available.

Convention on Long Range Transboundary Air Pollution (CLRTAP) is the UN air transport Convention on Long-Range Transboundary Air Pollution. The convention covers 8 protocols, of which the POPs protocol, to which PRIO has referred, regulates the use of persistent organic pollutants (POPs). The POPs protocol within CLRTAP is no longer updated. The work of regulating transboundary POPs continues now globally within the Stockholm Convention.