IMPACT OF CHELATION / COMPLEXATION PHENOMENON ON SOIL ENVIRONMENT

G.S. TEWARI¹, N. PAREEK², S.P. PACHAURI³, S. PANDEY⁴*
¹Departmentof Soil Science, G. B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
²Departmentof Soil Science, G. B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
³Departmentof Soil Science, G. B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
⁴Department of Fruit Science, Punjab Agricultural University, Ludhiana, Punjab, 141004, India
* Corresponding Author : swapnilpandey.kanchan10368@gmail.com

Received : 26-08-2018     Accepted : 12-10-2018     Published : 15-10-2018
Volume : 10     Issue : 19       Pages : 7314 - 7316
Int J Agr Sci 10.19 (2018):7314-7316

Keywords : Heavy metal contaminated soil, Chelators, Complexation, Micronutrient, Fertilizer, Phytoremediation
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to G. B. Pant University of Agriculture and Technology, Pantnagar, 263145, India
Author Contribution : All author equally contributed

Economic activities in the industrialized countries in the past have resulted in significant contamination of environmental resources including soil and groundwater. These activities include vehicle operation, mining, smelting, metal plating and finishing, battery production and recycling, agricultural and industrial chemical application, and incineration processes. Chelators that have been used for extraction of heavy metals from soils include EDTA, NTA, DTPA, formic, succinic, oxalic, citric, acetic, humic, and fulvic acids, glycine, cysteine etc. These chelators are used to remediate the heavy metal contaminated soil. Nutrient management is crucial for optimal productivity in commercial crop production. Although soil contains almost all the essential nutrients, but under certain conditions, these nutrients, especially the cations, can be tightly bound to the soil and also precipitation can limit their availability to the crop. Chelators has the ability to bind with the metals in the soil depending upon competition for particular metal ions, and can aid the nutrient uptake, transport from source to sink. Organo-mineral associations and complexation of SOM with metals ions largely determines the stability and degradability of organic matter. In the light of above fact, this review mainly focuses on the remediation of heavy metal contaminated soils by the application of chelating agents depending upon their recoverability and selectivity must be considered.

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