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ANNEX VIU.K.Reference methods for assessment of concentrations of sulphur dioxide, nitrogen dioxide and oxides of nitrogen, particulate matter (PM10 and PM2,5), lead, benzene, carbon monoxide, and ozone

[F1A. Reference methods for the assessment of concentrations of sulphur dioxide, nitrogen dioxide and oxides of nitrogen, particulate matter (PM 10 and PM 2,5 ), lead, benzene, carbon monoxide and ozone U.K.

2. Reference method for the measurement of nitrogen dioxide and oxides of nitrogen U.K.

The reference method for the measurement of nitrogen dioxide and oxides of nitrogen is that described in EN 14211:2012 Ambient air — Standard method for the measurement of the concentration of nitrogen dioxide and nitrogen monoxide by chemiluminescence .]