About 3.5 million journeys are taken on the London Underground every day - and passengers could unwittingly be inhaling metal that ends up in their bloodstream.
Travellers on London's Tube network could end up with metallic particles from the polluted air in their bloodstream, a study has found.
They found high levels of a type of iron oxide called maghemite, which they said suggests pollution particles are suspended for long periods due to poor ventilation, particularly on platforms. The researchers did not look at whether the metal particles pose a direct health risk, but said their methods could inform future studies.
"We periodically collect samples of Tube dust and analyse its content to track levels of potentially harmful materials, including iron, chromium and nickel.
Belgique Dernières Nouvelles, Belgique Actualités
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