BULGARIAN ACADEMY OF SCIENCE

National Institute of Meteorology and Hydrology

National Institute of Geophysics, Geodesy and Geography

CW BULGARIA
Bulgarian legislation for Nitrogen Dioxide (NO2):
Hourly threshold value (HT): 200 μg/m3
Permitted number of exceedings of HT in a year: 18
Yearly threshold value (YT): 40 μg/m3
Permitted number of exceedings of YT: impermissible
Alert threshold (hourly value): 400 μg/m3

DOMAINS

 
 
Funded by the
National Science Fund of Bulgaria