Tuesday, January 15, 2008

UK air quality improves dramatically

UK heavy metal concentrations have dropped 70% in the last 25 years, according to the National Physical Laboratory.

The total average concentration has fallen from 1873 nanograms per cubic metre of air in 1980 to just 568 ng/m3 in 2006 for the nine elements monitored. Lead has seen a particularly sharp decline falling from 556 ng/m3 in 1980 to 19.95ng/m3 last year, a reduction of 96.5%.

The decrease in air pollution reflects a move to greener industrial and household processes and advances in environmentally focused technology such as unleaded petrol. Dr Richard Brown, Principal Research Scientist at NPL explains.

Seems to me that when people urge adoption of limits on CO2 emissions so that we can "reduce pollution" we should point out first that CO2 is not a pollutant, then inform them that real pollution is already being reduced.

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