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Deteriorating air quality
5. Construction and road dust; 6. Deforestation in the Aravalli Range; 7. Inflow of dust from the Thar Desert; 8. Particulate matter from the burning of residual crops; and 9. The limited dispersion of pollutants in Northern India because of its unique topography. Addressing the anthropogenic factors is of paramount importance to prevent further degradation of air quality in Delhi. Primary air pollutants: pollutants emitted directly from any emission source in the atmosphere e.g. sulphur dioxide, carbon monoxide, lead, ammonia, etc. Secondary air pollutants: formed by the reactions between primary air pollutants and normal atmospheric constituents.
Air quality is monitored on a real-time basis. In Delhi, the quantity of pollutants in the air consistently exceeds the prescribed safety standard. 8 The situation is worsening due to climatic, geographic, seasonal and many anthropogenic (man-made) factors, such as: 1. Vehicle emissions; 2. Poor garbage disposal methods inter- alia by open burning of waste; 3. Unchecked emissions from factories; 4. Excessive burning of firecrackers during festivities, exacerbated by low pressure conditions during the winter;
8 http://cpcb.nic.in/index.php
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