Uptake and accumulation of potentially toxic metals (Zn, Cu and Pb) in soils and plants of Durgapur industrial belt

• Published in: Journal of environmental biology 2011-11, Vol.32 (6), p.831-831
• Main Authors: Kisku, Ganesh Chandra, Pandey, Poonam, Negi, Mahendra Pratap Singh, Misra, Virendra
• Format: Article
• Language: English
• Subjects: Bioaccumulation; Copper; Copper - chemistry; Copper - metabolism; Crops; Environmental Monitoring; Environmental science; Food chains; Food contamination; Fruits; Health risks; India; Industrial effluents; Industrial wastewater; Lead; Lead - chemistry; Lead - metabolism; Metallurgy; Metals; Metals, Heavy - chemistry; Metals, Heavy - metabolism; Phytotoxicity; Plant Roots - metabolism; Plants - metabolism; Rhizosphere; Roots; Seeds; Shoots; Soil; Soil - chemistry; Soil contamination; Soil Pollutants - chemistry; Soil Pollutants - metabolism; Soil pollution; Threshold limits; Variance analysis; Zinc; Zinc - chemistry; Zinc - metabolism
• ISSN: 0254-8704; 2394-0379

Uptake and accumulation of metals in crops may cause possible health risks through food chain. A field survey was conducted to investigate the accumulation of potentially toxic metals contamination in soil and plants irrigated with complexed industrial effluents. Concentration of Zn, Cu and Pb was 205-255,101-130,118-177 microg g(-1) in rhizosphere soils and 116-223, 57-102 and 63-95 microg g(-1) d. wt. in root and 95-186, 44-75 and 27-58 microg g(-1) d. wt. in shoot, respectively. The trend in Cu and Pb was in the order: soil > root > shoot > seed while in Zn it was soil > root > seed > shoot. Roots accumulated a larger fraction of soil Cu (70%) > Zn (67%) > Pb (54%). Bioaccumulation coefficient of soil to root ranged from 51-98 for Zn, 54-85 for Cu and 43-63 for Pb.Analysis of variance showed marginal change in bioaccumulation coefficient, noticed between plants (p > 0.05) while it varied significantly (p < 0.01) between tissues and metals. It increased from root to seed/fruit (root > shoot > seed/fruit) while decreased between metals from Zn to Pb (Zn > Cu > Pb). Out of the three, two Cu and Pb accumulated to phyotoxic levels while Zn was within threshold limit of phytotoxicity.