Department for Environment, Food and Rural Affairs written question – answered at on 31 January 2019.
To ask the Secretary of State for Environment, Food and Rural affairs, what methods of measuring emissions of (a) PM0.1 and (b) PM1 his Department is using.
The Government makes an annual assessment of the emissions of PM0.1 (also known as ultrafine particles) and PM1, which is published as part of the National Atmospheric Emissions Inventory (http://naei.beis.gov.uk/). The Inventory applies emission factors to activity data collected through the year, to estimate the total emissions.
Defra is continually working to build the evidence base for PM0.1, and its independent Air Quality Expert Group published a report on this subject on 27 July 2018 - ‘Ultrafine Particles (UFP) in the UK’.
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