International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Monitoring, Assessment and Status of Benzene, Toluene and Xylene Pollution in the Urban Atmosphere of Delhi, India

Author Affiliations

  • 1 MMH College Ghaziabad, U.P., INDIA

Res.J.chem.sci., Volume 2, Issue (4), Pages 45-49, April,18 (2012)


BTX (Benzene, Toluene and Xylene) are potentially toxic air pollutants among the volatile organic compounds (VOCs). These are present in the urban atmosphere in both exhaust and evaporative emissions from vehicles and fuel delivery outlets. The present paper gives an account of BTX levels in urban environment of Delhi measured since May 2008 to April 2010. Active sampling technique has been employed for measurements. A significant decrease (from 17.05/58.98/15.45 g/m3 to 16.00/52.99/14.22 g/m3 for B/T/X respectively during 2008-2009 and 2009-2010) was observed in the levels in the initial stage but the levels were found higher than the limiting value prescribed by CPCB (i.e. 5 g/m3- annual average for benzene). This indicates that in the urban atmosphere BTX do not dissipate easily in the environment and therefore, needs serious thought for reduction.


  1. Central Pollution Control Board (CPCB), Monitoring of benzene level in ambient air of Delhi, CPCB Report TOS-1(1999-2000)
  2. Tyagi S.K., BTX profile of fugitive emission and ambient air at Panipat refinery, Ind. Jr. of air pollu. and control, 4(1), 51-60 (2004)
  3. Singh A.K. and Jain C.L., Studies on volatile organic compounds (vocs) in ambient air of Delhi, Ph.D. Thesis submitted to CCS Univ., Meerut (UP) (2011)
  4. Central Pollution Control Board (CPCB), Benzene in air and its effect on human health, Parivesh News Letter, 1-32 (2002)
  5. Central Pollution Control Board (CPCB), Air quality status and trends, CPCB Report, NAAQMS/14/2000-2001
  6. WHO, Environmental health criteria document-150, Benzene, International Programme on Chemical Safety (IPCS) (1993)
  7. HMSO, Expert panel on air quality standard, Benzene, London, U.K. (1994)
  8. Tyagi S.K., Monitoring, assessment, status and management of benzene pollution in urban atmosphere of Delhi, Ind. Jr. of air pollu. and control, 5(2), 34-45 (2005)
  9. Kumar A. and Tyagi S.K., Benzene and toluene profile in ambient air of Delhi as determined by active sampling and GC analysis, Jr. of sci. and ind. Res., 65, 252-257(2006)
  10. Nair Abhilash T., Pharmaceuticals in Environment, A review on its effect, Res. J. Chem. Sci., 2(1), 103-105 (2012)
  11. Pandey Bhawana and Fulekar M. H., Environmental Management, strategies for chemical disaster, Res. J. Chem. Sci., 1(1), 111-117 (2011)
  12. Rahul, Mathur Anil Kumar and Balomajumder Chandrajit, Biodegradation of Waste gas containing mixture of BTEX by B. Sphaericus, Res. J. Chem. Sci., 1(5), 52-60 (2011)
  13. Bhattacharya Tanushree, Chakraborty S., Fadadu Bhumika and Bhattacharya Piyal, Heavy metal concentrations in Street and Leaf Deposited Dust in Anand city, India, Res. J. Chem. Sci., 1(5), 61-66 (2011)
  14. Thakur Prabhat Kumar, Rahul, Mathur Anil Kumar and Balomajumder Chandrajit, Biofiltration of Volatile Organic Compounds (VOCs), An Overview, Res. J. Chem. Sci., 1(8), 83-92 (2011)