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Air Pollution

Question for Department for Environment, Food and Rural Affairs

UIN 137956, tabled on 10 March 2022

To ask the Secretary of State for Environment, Food and Rural Affairs, what proportion of of regional background concentrations of fine particulate matter (PM2.5) in England in 2020 were from (a) ammonium nitrate, (b) ammonium sulphate and (c) organic particles.

Answered on

18 March 2022

Assessment of fine particulate matter (PM2.5) is undertaken on an annual basis to understand the key sources and contributions to PM2.5 in the UK, as well as to assess compliance with legally binding air quality standards.

Compliance in 2020 was detailed in the Air Pollution in the UK report (2020) published in Sept 2021 (available here: Further analysis is ongoing and a follow up technical modelling report, detailing the source apportionment undertaken for 2020, will be published on our UK Air website in the coming weeks.