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A TERI study had found that the reduction in vehicle population during the scheme was only 21 per cent. Hence, there is reasonable ground to believe that the average pollution level has actually decreased over time. Another important aspect of air pollution in Delhi is that it’s not a local problem.The relocation of industries away from Delhi and the introduction of CNG buses may have been partially responsible for this, but what’s more China The ePTFE air filter membrane Suppliers important to note is that Delhi’s poor air quality isn’t not just a recent problem but a historical one. Air pollution, particularly in the winter months, has been a problem throughout the nation’s northern and eastern cities. In the 1990s, the annual average SPM-10 level between 1990 and 1998 was 368 micrograms per cubic metre.

5 and how the nature of that may have changed, it is hard to say how the harmfulness of pollutants have changed. The comparison has to be made on the SPM-10 level as we don’t have data on SPM-2. Thus even if there is a 30 per cent reduction in the car population on the roads, the total reduction in pollution will be only three per cent.But on average, the four-wheelers covered in the scheme contribute only 10 per cent to total SPM in Delhi’s air. In comparison, the annual average SPM-10 level in 2007-2015 was at 225.It’s also important to note that the reduction in vehicle population in the second year was much less because people had developed coping mechanisms like owning a second car that could be second-hand, and therefore even more polluting.The product was first launched in Brazil, and features an innovative cooling system designed to simultaneously conserve energy and deliver comfort."Air pollution is a global problem that is important for not only Beijing, but also Boston and Barcelona."

Air pollution exposure is a universal burden that affects us all, and somehow we are the ones obligated to find ways to reduce our exposure with these insufficient tools," he said.Future studies should recruit more volunteers, Peltier said, and focus on the main reasons why masks seem to fail - whether the material itself is faulty, the masks don’t fit different people well, or they don’t seem to work well for daily living conditions.26 per cent to 29 per cent, depending on the mask material. Breathing pollutants, especially particulate matter, is very harmful, causing millions of early deaths across the world," Richard Peltier of the University of Massachusetts Amherst, who wasn’t involved in the study, told Reuters Health by email.