§ Miss Melanie Johnson
The evidence on the biological effects of ultrafme particles has been described in the 2001 report, Airborne Particles, by the expert panel on air quality standards. The panel noted that only limited evidence was available on the effect of ultrafme particles on health in humans. For this reason, the Department has not at this stage assessed the impact of ultrafme particles from vehicles on human health.
The report is available on the website of the Department for Environment, Food and Rural Affairs at www.defra.qov.uk/environment/airquaritv/aqs/air measure/index.htm.