High concentrations of nitrogen dioxide are harmful because they cause inflammation of the airways.
The study concluded that the most deprived 10% of areas in England are subject to 41% higher concentrations of nitrogen dioxide from transport and industry than the average.
High concentrations of nitrogen dioxide cause inflammation of the airways and can also react to form other secondary pollutants, such as ozone, which create their own health problems.
The new statement from the government, released after a meeting of the airports subcommittee, stressed the need for further environmental work, including testing the Airports Commission's air quality analysis using the latest predicted concentrations of nitrogen dioxide.
Oxford Street, the main shopping thoroughfare which is a major bus artery through central London, was found by air quality experts at Kings College London to have some of the highest concentrations of nitrogen dioxide pollution in the world.
About 7,000 homes here rely on septic tanks, which can lead to higher concentrations of nitrogen in the groundwater, especially in more crowded areas, said Kevin Winn, Bedford's commissioner of public works.
Elevated concentrations of nitrogen dioxide have been shown to cause respiratory problems, including elevated asthma and irritation".
One has tracked birth defects since 1997, and the other has recorded concentrations of nitrogen dioxide, nitrogen oxide, carbon monoxide and particulate matter at 20 locations in the valley since the 1970s.
By contrast, eutrophic waters are well supplied with nutrients and generally have high concentrations of nitrogen and phosphorus and, correspondingly, large concentrations of plankton owing to high biological productivity.
However, AMVL production was decreased at high concentrations of nitrogen sources.
The concentrations of nitrogen and aromatics markedly differ whilst sulphur is comparable in these two feeds.
