Reference methods for assessment of concentrations in ambient air and deposition rates
ANNEX VSupplementary provisions
ANNEX V Reference methods for assessment of concentrations in ambient air and deposition rates I. Reference method for the sampling and analysis of arsenic, cadmium and nickel in ambient air The reference method for the measurement of arsenic, cadmium and nickel concentrations in ambient air is currently being standardised by CEN and shall be based on manual PM 10 sampling equivalent to EN 12341, followed by digestion of the samples and analysis by Atomic Absorption Spectrometry or ICP Mass Spectrometry. In the absence of a CEN standard method, Member States are allowed to use national standard methods or ISO standard methods. A Member State may also use any other methods which it can demonstrate give results equivalent to the above method. II. Reference method for the sampling and analysis of polycyclic aromatic hydrocarbons in ambient air The reference method for the measurement of benzo(a)pyrene concentrations in ambient air is currently being standardised by CEN and shall be based on manual PM 10 sampling equivalent to EN 12341. In the absence of a CEN standard method, for benzo(a)pyrene or the other polycyclic aromatic hydrocarbons referred to in Article 4(8), Member States are allowed to use national standard methods or ISO methods such as ISO standard 12884. A Member State may also use any other methods which it can demonstrate give results equivalent to the above method. III. Reference method for the sampling and analysis of mercury in ambient air The reference method for the measurement of total gaseous mercury concentrations in ambient air shall be an automated method based on Atomic Absorption Spectrometry or Atomic Fluorescence Spectrometry. In the absence of a CEN standardised method, Member States are allowed to use national standard methods or ISO standard methods. A Member State may also use any other methods which it can demonstrate give results equivalent to the above method. IV. Reference method for the sampling and analysis of the deposition of arsenic, cadmium, mercury, nickel and polycyclic aromatic hydrocarbons The reference method for the sampling of deposited arsenic, cadmium, mercury, nickel and polycyclic aromatic hydrocarbons shall be based on the exposition of cylindrical deposit gauges with standardised dimensions. In the absence of a CEN standardised method, Member States are allowed to use national standard methods. V. Reference air quality modelling techniques Reference air quality modelling techniques cannot be specified at present. Any amendments to adapt this point to scientific and technical progress must be adopted in accordance with the procedure laid down in Article 6.