Não, ouro 3 meses depois (porque os críticos do estudo defendem que o ouro não é representativo a poluição atmosférica):
http://www.independent.co.uk/news/science/air-pollution-enter-bloodstream-deadly-smoking-gun-study-edinburgh-university-gold-nanoparticles-a7702991.html
Citação:
"Tiny particles – like those produced in vast amounts by burning fossil fuels – can pass through the lungs into the bloodstream and then damage various different organs, according to a controversial new experiment.
While air pollution has been linked to heart disease and millions of premature deaths, it was previously not known whether it was possible for the smallest particles to pass from the lungs into the bloodstream.
The new research saw 14 healthy volunteers and 12 surgical patients inhale nanoparticles of gold.
Gold was detected in the blood and urine within 15 minutes to 24 hours after exposure, and was still present three months after exposure. Levels were greater following inhalation of five-nanometre particles compared to 30nm particles."
