Air pollution index indicates danger levels

David Swinbanks

Nature, 1997, vol. 389, issue 6649, 321-321

Abstract: tokyo The Pollutants Standard Index, devised by the US Environment Protection Agency, is based on the atmospheric concentrations of ozone, nitrogen dioxide, sulphur dioxide, carbon monoxide and particulate matter.

Date: 1997
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DOI: 10.1038/38577

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