Toxic Benzene levels in Delhi air
Dr K K Aggarwal Most of the times, we worry about PM 2.5 and PM 10 levels. But, we ignore benzene levels, which indicate the yearly pollution stays of an area. The normal levels are 5 µg/m3. Following is the yearly average in most parts of Delhi for example. • Anand Vihar: 44.3 µg/m3 • Mandir Marg 9.2 µg/m3 • Punjabi Bagh 2.2 µg/m3 • RK Puram 17.0 µg/m3 • IGI Airport 12.68 µg/m3 • Civil Lines 23.14 µg/m3 Some facts about benzene • Benzene is a pollutant often released from oil refineries and traffic exhaust. • Benzene is a compound of crude oil and petrol that can be harmful even at trace levels. • Apart from vehicular exhausts, evaporation from petrol filling stations can also cause benzene levels to rise. • Benzene is a hazardous air pollutant. • Benzene is a known human carcinogen. Long-term exposure to high levels of benzene in the air can cause leukemia and lymphomas • Human studies suggest that maternal exposures to benzene during pregnancy may increase risk for miscarriages, low birth weight infants and childhood cancers. • Pregnant women living in areas with higher air levels of benzene are more likely to have babies with neural tube defects. Women living in the areas with the highest benzene levels are at a two times greater risk for their children to be born with spina bifida. • Delhi should install vapor recovery systems at petrol pumps as soon as possible to deal with high benzene levels. • The air quality index (AQI) recently launched by the Centre does not monitor the quantity of benzene. The AQI deals with pollutants that have immediate short-term impacts like respiratory or cardiovascular diseases. Benzene, on the other hand, is an air toxin and a carcinogen which can cause damage in the long run. • Benzene levels are higher when the temperature is lower. • Benzene rises after sunset and peaks early morning. • Benzene gets mixed with blood while breathing.
Dr K K Aggarwal Most of the times, we worry about PM 2.5 and PM 10 levels. But, we ignore benzene levels, which indicate the yearly pollution stays of an area. The normal levels are 5 µg/m3. Following is the yearly average in most parts of Delhi for example. • Anand Vihar: 44.3 µg/m3 • Mandir Marg 9.2 µg/m3 • Punjabi Bagh 2.2 µg/m3 • RK Puram 17.0 µg/m3 • IGI Airport 12.68 µg/m3 • Civil Lines 23.14 µg/m3 Some facts about benzene • Benzene is a pollutant often released from oil refineries and traffic exhaust. • Benzene is a compound of crude oil and petrol that can be harmful even at trace levels. • Apart from vehicular exhausts, evaporation from petrol filling stations can also cause benzene levels to rise. • Benzene is a hazardous air pollutant. • Benzene is a known human carcinogen. Long-term exposure to high levels of benzene in the air can cause leukemia and lymphomas • Human studies suggest that maternal exposures to benzene during pregnancy may increase risk for miscarriages, low birth weight infants and childhood cancers. • Pregnant women living in areas with higher air levels of benzene are more likely to have babies with neural tube defects. Women living in the areas with the highest benzene levels are at a two times greater risk for their children to be born with spina bifida. • Delhi should install vapor recovery systems at petrol pumps as soon as possible to deal with high benzene levels. • The air quality index (AQI) recently launched by the Centre does not monitor the quantity of benzene. The AQI deals with pollutants that have immediate short-term impacts like respiratory or cardiovascular diseases. Benzene, on the other hand, is an air toxin and a carcinogen which can cause damage in the long run. • Benzene levels are higher when the temperature is lower. • Benzene rises after sunset and peaks early morning. • Benzene gets mixed with blood while breathing.
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