A new study carried out over two years estimates that pollution around Heathrow Airport is on track to drop and would not exceed limits if the third runway is given the go-ahead.
The independent study was carried out between 2012 and 2014 by Professor Rod Jones, of the University of Cambridge chemistry department.
Pollution was measured with 40 sensors in and around the airport which could differentiate between aircraft and vehicle emissions.
Prof Jones delivered his findings at Innovations in Environmental Monitoring at the University of York on September 22.
He predicts there will be a fall in levels of poisonous nitrogen dioxide (NO2) by the time a third runway at Heathrow would be delivered.
This would mean a third runway would not exceed pollution limits.
He states that although a third runway would increase aircraft pollution, ‘background’ NO2 levels from vehicles are predicted to ‘fall significantly’.
This is partly down to an increase in electric vehicles.
A Heathrow spokesman said: “This study is the latest independent evidence which confirms the Airports Commission’s analysis that a third runway can be delivered within tough environmental limits.
“Heathrow expansion will make Britain stronger and fairer for everyone – now is the time for the Government to make the right choice and back Heathrow.”
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