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Limit values

The Danish limit values for air quality are based on EU directives.

In May 2008 the directive 2008/50/EF (pdf, opens in new window) on "Ambient Air Quality and Cleaner Air for Europe" was adopted.

It replaces most of the previous directives (a "Framework Directive 96/62/EC" from 1996, and four "daughter directives"). One of the daughter directives remains in force, while the others are replaced by the 2008 directive.

The directives and an additional amount of official information about the directives can be found on an EU-page 'Review of the EU Air policy'.  

Overview of limit values and target values in EU air quality legislation 

Substance

Limit value (µg/m3)

Averaging time

Statistics

Protection of

When should limit be met?

NO2

200

1 hour

18 times per year

Humans

2010

 

40

-

Annual average

Humans

2010

NOx

30

-

Annual average

Vegetation

2010

SO2

350

1 hour

24 times per year

Humans

2005

 

125

24 hours

3 times per year

Humans

2005

 

20

 

Annual average og vinter

Ecosystems

2001

Particles (PM2,5)

251

-

Annual average

Humans

2010, target value

25

-

Annual average

Humans

2015

Particles (PM10)

50

24 hours

35 times per year

Humans

2005

40

-

Annual average

Humans

2005

Lead

0,5

-

Annual average

Humans

2005

Benzene

5

-

Annual average

Humans

2010

CO

10.000

8 hours (running mean)

Maximum

Humans

2005

Ozone

1201

Maximum 8 hours (running mean))

25 days per year, average over 3 years

Humans

2010, target value

 

1202

Maximum 8 hours (running mean))

1 day per year

Humans

long term objective

 

1803

1 hour

Maximum

Humans

2003

 

2404

1 hour

Maximum over 3 hours

Humans

2003

 

18.000 (µg/m3*hours)

AOT40

May - July

Vegetation

2010

 

6.000 (µg/m3*hours)

AOT40

May - July

Vegetation

long term objective

As1,5

0,006

-

Annual average

Humans

2010, target value

Cd1,5

0,005

-

Annual average

Humans

2010, target value

Ni1,5

0,02

-

Annual average

Humans

2010, target value

Benz(a)-pyrene1,5

0,001

-

Annual average

Humans

2010, target value

Hg6

-

-

-

Humans

-


Notes:

1) Target value

2) Long term objective

3) Information threshold

4) Alert threshold

5) In PM10

6) Trend is monitored