# The Air Quality Standards (Wales) Regulations 2007, Part 2: Group B pollutants in ambient air


Reference method
Sampling and analysis of Group B pollutants other than benzo(a)pyrene in ambient air
A method based on manual PM10 sampling equivalent to EN 12341, followed by digestion of the samples and analysis by Atomic Absorption Spectrometry or ICP Mass Spectrometry
Benzo(a)pyrene concentrations in ambient air
A method based on manual PM10 sampling equivalent to EN 12341

---
Source: https://www.legislation.gov.uk/wsi/2007/717/schedule/9/part/2 (the official version)
Page: https://openlegislation.uk/air-quality-standards-wales-regulations-2007/schedule-9/part-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.