Defined terms — Directive 2004/107/EC of the European Parliament and of the Council of 15 December 2004 relating to arsenic, cadmium, mercury, nickel and polycyclic aromatic hydrocarbons in ambient air
European Union · 32004L0107 · 397 provisions
9 defined in this instrument.
benzo(a)pyrene — the total content of these elements and compounds in the PM_(10) fraction Article 2
fixed measurements — measurements taken at fixed sites either continuously or by random sampling, in accordance with Article 6(5) of Directive 96/62/EC (e)
lower assessment threshold — a level specified in Annex II below which the sole use of modelling or objective estimation techniques shall be possible to assess ambient air quality, in accordance with Article 6(4) of Directive 96/62/EC (d)
PM_(10) — particulate matter, which passes through a size-selective inlet as defined in EN 12341 with a 50 % efficiency cut-off at 10 μm aerodynamic diameter (g)
polycyclic aromatic hydrocarbons — those organic compounds, composed of at least two fused aromatic rings made entirely from carbon and hydrogen (h)
target value — a concentration in the ambient air fixed with the aim of avoiding, preventing or reducing harmful effects on human health and the environment as a whole, to be attained where possible over a given period (a)
total gaseous mercury — elemental mercury vapour (Hg^(0)) and reactive gaseous mercury, i.e. water-soluble mercury species with sufficiently high vapour pressure to exist in the gas phase (i)
total or bulk deposition — the total mass of pollutants which is transferred from the atmosphere to surfaces (e.g. soil, vegetation, water, buildings, etc.) in a given area within a given time (b)
upper assessment threshold — a level specified in Annex II below which a combination of measurements and modelling techniques may be used to assess ambient air quality, in accordance with Article 6(3) of Directive 96/62/EC (c)