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Page last updated : 15/05/2008

Polycyclic Aromatic Hydrocarbons - PAHs

Source : CITEPA / CORALIE SECTEN format - last updated 28 February 2008

Survey period : since 1990

Emissions Variations
Emissions en 2006 : 24 t Variation 2006 / 1990 : -43 %
Maximum observed : 50 t in 1991 Variation 2006 / maximum : -52 %
Minimum observed : 24 t in 2006 Variation 2006 / minimum : 0 %

Main emitters in 2006 (top 5 of total emissions) :
 

1 - Residential 75 %
2 - Catalysed diesel-engined passenger cars 7.8 %
3 - Non-catalysed diesel-engined light duty vehicles 3.4 %
4 - Non-catalysed diesel-engined passenger cars 2.7 %
5 - Diesel-engined heavy duty vehicles 1.7 %

Comments

PAH emissions (Polycyclic Aromatic Hydrocarbons) presented are : benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene and indeno(1,2,3-cd)pyrene. These 4 PAHs are those defined by the Aarhus protocol and by the 850/2006 regulation of the European parliament and the Council of the 29 April 2004 .

Emissions of those 4 PAHs were estimated at 24 t in 2006. Between 1990 and 2006, emissions accounted a reduction of 43% (-18.4 t). On the whole, emissions decreased in all the sectors, except road transport.

The two major sources of PAH emissions were by importance order :

  • residential/tertiary : 75%,
  • road transport : 19%, especially diesel vehicles.

The other sectors contributed to the emissions for a low level (energy conversion sector, manufacturing industry, agriculture/forestry and other transports). The LULUCF (UTCF in French) sector did not emit PAHs at all.

It is presumed that PAHs are emitted in large amounts during combustion of fuels and especially biomass when the process is not well controlled, for instance with open combustion plants in the residential sector.

Changes in emissions depend on weather conditions due to the close link between emissions and energy consumption, regarding the year 1991. Progressive installation of appliances biomass combustion more efficient in the domestic sector should lead to gradually reduce emissions in the future.


 

  
 
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