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The groundwater in and around active and abandoned coalmines has been always obstinately under the menace of contamination. The central India’s well-established coalfields lineated along the Wardha River are also under similar menace. It is judiciously comprehensible that a sincere approach for the monitoring and management of the groundwater is anticipated. The geospatial techniques have confirmed its potentiality in various sectors including groundwater studies. The present work is to comprehend the heavy metals’ contamination within groundwater regime of the study area and its source approximation by means of geospatial techniques. In 2019, 45 groundwater samples for pre and post-monsoon each were considered from the study area to outline the groundwater regime. After pilot investigation, the groundwater was analysed for Aluminium, Cadmium, Chromium, Copper, Iron, Nickel, lead and Zinc. The groundwater samples have evidently manifested the contamination of Cadmium, Iron, Nickel and Lead at certain locations. Towards attainment of an accurate spatial depiction of contamination, an Ordinary Kriging method has been employed for obtaining interpolation and prediction standard error maps for identified contaminants. The base map was so systematized that the metal’s enrichment and paucity in the groundwater is easily comparable with the lithology and relief of the study area. The consequent maps indicated the contamination hotspots in the proximity of the active coalfields and lithology constituting rock strata belonging to Barakar formation. These spatial depictions of the contaminations were then confirmed by evidences obtained from the petrology of the selected rock samples from the identified area. The geospatial approach not only elucidated the dispersal of heavy metals in the groundwater but also aided in identifying their both spatial and temporal sources. The heavy metals’ toxicity in terms of bioaccumulation is an established fact. The source approximation and elucidated dispersal pattern of heavy metals in the groundwater, provides greater and better likelihoods to hinder their bioaccumulation.

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Source Approximation of Heavy Metals in the Groundwater Regime of Wardha Valley Coalfields, Central India: A Geospatial Approach

  • 章节

  • 发表日期：

    2025年

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  • Priyadarshan S. Ganvir,
  • Rajeeva Guhey

摘要

The groundwater in and around active and abandoned coalmines has been always obstinately under the menace of contamination. The central India’s well-established coalfields lineated along the Wardha River are also under similar menace. It is judiciously comprehensible that a sincere approach for the monitoring and management of the groundwater is anticipated. The geospatial techniques have confirmed its potentiality in various sectors including groundwater studies. The present work is to comprehend the heavy metals’ contamination within groundwater regime of the study area and its source approximation by means of geospatial techniques. In 2019, 45 groundwater samples for pre and post-monsoon each were considered from the study area to outline the groundwater regime. After pilot investigation, the groundwater was analysed for Aluminium, Cadmium, Chromium, Copper, Iron, Nickel, lead and Zinc. The groundwater samples have evidently manifested the contamination of Cadmium, Iron, Nickel and Lead at certain locations. Towards attainment of an accurate spatial depiction of contamination, an Ordinary Kriging method has been employed for obtaining interpolation and prediction standard error maps for identified contaminants. The base map was so systematized that the metal’s enrichment and paucity in the groundwater is easily comparable with the lithology and relief of the study area. The consequent maps indicated the contamination hotspots in the proximity of the active coalfields and lithology constituting rock strata belonging to Barakar formation. These spatial depictions of the contaminations were then confirmed by evidences obtained from the petrology of the selected rock samples from the identified area. The geospatial approach not only elucidated the dispersal of heavy metals in the groundwater but also aided in identifying their both spatial and temporal sources. The heavy metals’ toxicity in terms of bioaccumulation is an established fact. The source approximation and elucidated dispersal pattern of heavy metals in the groundwater, provides greater and better likelihoods to hinder their bioaccumulation.