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24 February 2009 - Published in environment.gov.au

The study measured decreases in particulate matter (PM) emissions from vehicles using up to 10 per cent ethanol blends (E5 and E10). In some individual vehicles, emission reductions were measured at up to 30 per cent. However, while this is a positive finding, these figures represent a small fraction (less than a half of one per cent) of the total PM emissions in the Sydney airshed. Results for other emissions from E5 and E10 show that some pollutants marginally increase such as oxides of nitrogen while others marginally decrease such as carbon monoxide marginally decrease.

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