All official European Union website addresses are in the europa.eu domain.
See all EU institutions and bodies
An official website of the European Union | How do you know?
Environmental information systems
EN
ALV | annual limit value |
AQG | air quality guidance |
ATV | annual target value |
BaP | benzo(a)pyrene |
C6H6 | benzene |
CO | carbon monoxide |
DLV | daily limit value |
EEA | European Environment Agency |
ETC HE | European Topic Centre on Human Health and the Environment |
EU | European Union |
EU-27 | 27 Member States of the EU |
HLV | hourly limit value |
LTO | long-term objective |
LV | limit value |
μg/m3 | microgram per cubic metre |
mg/m3 | milligram per cubic metre |
µm | micron |
ng/m3 | nanogram per cubic metre |
NH3 | ammonia |
NO2 | nitrogen dioxide |
NOX | nitrogen oxides |
O3 | ground-level ozone |
PM | particulate matter |
PM10 | PM with a diameter of 10µm or less |
PM2.5 | PM with a diameter of 2.5µm or less, also known as fine particulate matter |
SO2 | sulphur dioxide |
TV | target value |
UNSCR 1244/99 | United Nations Security Council Resolution 1244 (1999) |
UTD | up-to-date |
VOC | volatile organic compound |
WHO | World Health Organization |