World Journal of
Pharmaceutical and Life Sciences

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Pharmaceutical and Life Sciences
An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)
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Abstract

EVALUATION OF HEAVY METALS DISTRIBUTION AND ROLE IN PHYSICAL PROPERTIES OF SOIL IN SEWAGE IRRIGATED SITES OF ALLAHABAD, INDIA

Dinesh Mani, Vishv Kumar Mourya*, Niraj Pal, Indra Sen Tiwari, Shailendra Kumar, Ashutosh Kumar and Prashant Kumar Singh

ABSTRACT

In present investigation, the depth-wise distribution of four heavy metals viz. Cd, Cr, Pb and Zn was observed. Continuous use of sewage irrigation on agricultural land increased the DTPA-extractable Cd, Cr, Pb and Zn from 0.081±0.01-0.270±0.01 mg kg-1, 0.084±0.005-0.46±0.02 mg kg-1, 0.082±0.002-0.80±0.033 mg kg-1 and 8.40±0.16-16.40±0.432 mg kg-1 in surface soil (0-15cm), respectively. A very low amount of heavy metals (Cd, Cr, Pb and Zn) was observed in (45-60 cm) depth in comparison to surface soil (0-15 cm) in all the soil examined. Similarly accumulation of total heavy metals (Cd, Cr, Pb and Zn) observed from 1.30±0.10-4.60±0.20 mg kg-1, 1.23±0.05-4.40±0.53 mg kg-1, 1.78±0.36-6.8±0.20 mg kg-1 and 57.93±1.72-95.30±5.03 mg kg-1 in surface soil (0-15cm) respectively. A low amount of total heavy metals (Cd, Cr, Pb and Zn) was observed in 45-60 cm depth in comparison to surface soil (0-15 cm) in all the soil examined indicating low mobility of these metals down the depth. The soil organic carbon content in soils were positively and significantly correlated with DTPA-extractable Cd (r=0.81**), Cr (r=75*), Pb (r=0.61*) and Zn (r=0.96**), while clay contents showed negative impact on the extractability of these metals. Similarly correlations of total heavy metals with physical properties were observed positively, while pH and clay content showed negative impact.

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