ISSN: 2375-3935
American Journal of Food Science and Nutrition  
Manuscript Information
 
 
Human Health Risk of Heavy Metals in Vegetables Grown in Contaminated Soil Irrigated with Sewage Water
American Journal of Food Science and Nutrition
Vol.4 , No. 4, Publication Date: Aug. 8, 2017, Page: 23-35
75 Views Since August 8, 2017, 27 Downloads Since Aug. 8, 2017
 
 
Authors
 
[1]    

Arbind Kumar, P.G. Department of Chemistry, Darshan Sah College, Katihar, Bhupendra Narayan Mandal University, Madhepura, Bihar, India.

[2]    

 Seema, Department of Botany and Plant Physiology, College of Horticulture, Noorsarai, Nalanda, Bihar Agricultural University, Sabour, Bhagalpur, Bihar, India.

[3]    

Vipin Kumar, Department of Chemistry and Environmental Science, Katihar Engineering College, Katihar, Bheria, Rehika, Katihar, Aryabhatt Knowledge University, Patna, Bihar, India.

 
Abstract
 

The present study was carried out to assess the level of heavy metals in water, soil and some selected common vegetables grown at sewage water irrigated (SWI) and ground water irrigated (GWI) zone in the peri - urban area of Katihar city and also to estimate human health risk through their consumption. It was found that sewage water and soil irrigated with sewage water were highly polluted. The results revealed that the accumulation of heavy metals in the test vegetables grown in soil at SWI zone moderately enhanced with Cr, Cu, Ni and Mn while strongly enriched with Cd and Pb was observed in the order of spinach (134.45) > coriander (130.06) > cabbage (129.87) > cauliflower (128.46) > carrot (77.78) > potato (69.88). The population load index (PLI), bioaccumulation factor (BAF), daily intake of metals (DIM) and health risk index (HRI) were also studied. The maximum value of PLI was found for Cd (990.03%) and minimum for Mn (8.40%) in soil irrigated with sewage water. High BAF values greater than 1 for Cd, Mn and Pb were observed in cabbage, cauliflower, spinach and coriander at SWI zone and could be one of the possible reasons for health risk in human via their consumption. The consumption of vegetables collected from SWI zone to daily intake of Pb, Cd, Mn, Cu, Ni and Cr were 17.26%, 12.91%, 2.27%, 0.584% 8.62% and 5.67% of PTDI respectively. Thus, the consumption of average amount of these vegetables does not pose a health risk for consumer. Cd, Pb and Mn showed HRI greater than one in cabbage, cauliflower, spinach and coriander collected from SWI zone, pose severe health risk while potato and carrot were almost safe for consumption. The vegetables grown at GWI zone were entirely free from any risk. However, the regular monitoring of levels of these metals in sewage water, soil and in vegetables is essential to prevent excessive build of the metals in the food chain.


Keywords
 

Water, Soil, Vegetables, Heavy Metals, PLI, BAF, DIM, HRI


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