Reducing Air Pollution

MQT on 2011-12-14
Session date: 
December 14, 2011
Question By: 
Mike Tuffrey
Liberal Democrats
Asked Of: 
The Mayor


Further to MQT 3132/2011 at what rate in mass per day do you estimate that each of: (a) dangerous airborne particles (PM10); and (b) nitrogen dioxide, will be removed from London air?


Answer for Reducing Air Pollution

Answer for Reducing Air Pollution

Answered By: 
The Mayor

It is too early to estimate the quantities of airborne particles (PM10) that will be removed as a result of the green infrastructure measures that are being implemented under the Clean Air Fund programme.


As the Clean Air Fund is focused on PM10, the nitrogen dioxide benefits will not be evaluated.


The Air Pollution Research in London (APRIL) group are helping TfL evaluate the impact of green infrastructure measures on PM10 concentrations, although it is too early to give any meaningful results at this stage.


Imperial College, part of the APRIL group, has collected leaf samples from some of the plants to establish the ability of green infrastructure to trap PM10. This research will be extended in spring 2012, as the deciduous species come into leaf, and will continue through the summer.