alexa Risk assessment of heavy metal toxicity through contaminated vegetables from waste water irrigated area of Varanasi, India
Environmental Sciences

Environmental Sciences

Advances in Recycling & Waste Management

Author(s): ANITA SINGH, RAJESH KUMAR SHARMA, MADHOOLIKA AGRAWAL, FIONA M MARSHALL

Abstract Share this page

In certain areas of Varanasi city, waste water from Dinapur sewage treatment plant is used for irrigating vegetable plots. We quantified the concentrations of heavy metals, viz. Cd, Cr, Cu, Ni, Pb and Zn in soil, vegetables and the waste water used for irrigation. The waste water used for irrigation had the highest concentration of Zn followed by Pb, Cr, Ni, Cu and Cd. Continuous application of waste water for more than 20 years has led to accumulation of heavy metals in the soil. Consequently, concentrations of Cd, Pb and Ni have crossed the safe limits for human consumption in all the vegetables. Percent contribution of fruit vegetables to daily human intake for Cu, Ni, Pb and Cr was higher than that of leafy vegetables, while the reverse was true for Cd and Zn. Target hazard quotient showed health risk to the local population associated with Cd, Pb and Ni contamination of vegetables. Therefore, to reduce the health risk and the extent of heavy metal contamination, steps must be taken for efficient treatment of sewage. Regular monitoring of heavy metals in the vegetables grown in waste water irrigated areas is also necessary.

  • To read the full article Visit
  • Open Access
This article was published in International Society for Tropical Ecology and referenced in Advances in Recycling & Waste Management

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • 4th World Congress and Expo on Recycling
    July 27-29, 2017 Rome, Italy
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords