{
  "url": "https://openlegislation.uk/air-quality-standards-wales-regulations-2007/schedule-9/part-2",
  "json_url": "https://openlegislation.uk/air-quality-standards-wales-regulations-2007/schedule-9/part-2.json",
  "legislation": "wsi/2007/717",
  "legislation_title": "The Air Quality Standards (Wales) Regulations 2007",
  "legislation_url": "https://openlegislation.uk/air-quality-standards-wales-regulations-2007",
  "path": "schedule/9/part/2",
  "kind": "part",
  "number": "2",
  "heading": "Group B pollutants in ambient air",
  "text": "Reference method\nSampling and analysis of Group B pollutants other than benzo(a)pyrene in ambient air\nA 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\nBenzo(a)pyrene concentrations in ambient air\nA method based on manual PM10 sampling equivalent to EN 12341",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2007/717/schedule/9/part/2",
    "retrieved_at": "2026-10-29T00:01:33.213395+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}