Olympic Road Race route has dangerous pollution levels

Air quality in Putney could cause health problems for some cyclists

by Sarah Barth   July 27, 2012  

pollution.jpg

Mark Cavendish, Bradley Wiggins and the other hopefuls in tomorrow's Olympic road race have another thing to worry about - air pollution.

We wrote last week about one of the services that lets you know about the air quality in your local area, and a Roadcc reader has let us know that in Putney, which features twice on the road race route, both in and out of central London, levels of nitrogen dioxide are nine out of a possible 10.

Official government advice when the figures hit these heights is:

For the general population: "Anyone experiencing discomfort such as sore eyes, cough or sore throat should consider reducing activity, particularly outdoors."

For at risk individuals: "Adults and children with lung problems, and adults with heart problems, should reduce strenuous physical exertion, particularly outdoors, and particularly if they experience symptoms. People with asthma may find they need to use their reliever inhaler more often. Older people should also reduce physical exertion"

Now these are world class athletes, so they're probably not in the 'at risk' groups, to be fair, but it's an interesting comment on London's roads and air quality.

According to government information, nitrogen dioxide is pretty nasty stuff:

Nitrogen dioxide (NO2) is one of a group of gases called nitrogen oxides. Road transport is estimated to be responsible for about 50% of total emissions of nitrogen oxides, which means that nitrogen dioxide levels are highest close to busy roads and in large urban areas. Gas boilers in buildings are also a source of nitrogen oxides.

 

There is good evidence that nitrogen is harmful to health. The most common outcomes are respiratory symptoms such as shortness of breath and cough. Nitrogen dioxide inflames the lining of the lung and reduces immunity to lung infections such as bronchitis. Studies also suggest that the health effects are more pronounced in people with asthma compared to healthly individuals.

In recent years the average level of nitrogen dioxide within London has not fallen as quickly as predicted. This largely appears to be the result of diesel cars creating more nitrogen dioxide than was anticipated.

 

Nitrogen dioxide also reacts with hydrocarbons in the presence of sunlight to create ozone, and contributes to the formation of particles*.

 

*tiny bits of solids or liquids suspended in the air, that can settle in the airway and deep in the lungs and cause health problems.

4 user comments

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Nitrogen dioxide also reacts with hydrocarbons in the presence of sunlight to create ozone, For christ's sake don't let the three stooges from top gear see this or otherwise they will be claiming they're actually helping the environment with their chelsea tractors.

FATBEGGARONABIKE's picture

posted by FATBEGGARONABIKE [605 posts]
27th July 2012 - 21:23

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Whatever numpty wrote this:

There is good evidence that nitrogen is harmful to health. The most common outcomes are respiratory symptoms such as shortness of breath and cough. Nitrogen dioxide inflames the lining of the lung and reduces immunity to lung infections such as bronchitis. Studies also suggest that the health effects are more pronounced in people with asthma compared to healthly individuals.

did not do O Level/O Grade chemistry. That's nitrogen dioxide that's dioxide that's bad for. If nitrogen was bad for you, we'd have very short lives, given that close to 80% of the earth's atmosphere is composed of nitrogen.

OldRidgeback

posted by OldRidgeback [2308 posts]
27th July 2012 - 21:57

3 Likes

Oh noes! NO2 is at level 9 out of 10! Won't somebody please think of the children!?

posted by Nick T [844 posts]
27th July 2012 - 22:07

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Wonder why the rider's faces were full of black stuff - was that pollution? Surprise

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koko56's picture

posted by koko56 [334 posts]
28th July 2012 - 21:57

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