Heavy metal signatures in urban and peri-urban agricultural soils across the Mumbai Metropolitan Region, India
Article
Article Title | Heavy metal signatures in urban and peri-urban agricultural soils across the Mumbai Metropolitan Region, India |
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ERA Journal ID | 5265 |
Article Category | Article |
Authors | Vazhacharickal, Prem Jose (Author), Gurav, Trupti (Author) and Chandrasekharam, D. (Author) |
Journal Title | Nutrient Cycling in Agroecosystems |
Journal Citation | 115 (2), pp. 295-312 |
Number of Pages | 18 |
Year | 2019 |
Publisher | Springer |
Place of Publication | Netherlands |
ISSN | 1385-1314 |
1573-0867 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s10705-018-9966-y |
Abstract | Millennium Development Goals recognized the contribution of urban and peri-urban agriculture (UPA) towards food security, income generation, and livelihood strategies. Given the scarcity of relevant data, the present study was conducted to assess heavy metal load of UPA soils (at 0.00–0.20, 0.20–0.60 and 0.60–1.00 m depth) in Mumbai Metropolitan Region, India by comparing the signatures from soil profiles of three railway gardens (RG1–3) and three farms (F1–3) over 2 years. Potential human health risks of consuming produce from these soils were assessed using the contamination factor, degree of contamination, pollution load index (PLI), enrichment factor, geoaccumulation index (Igeo), and total metal and element content in comparison with different safety standards. Semi-sequential extractions were performed to determine the concentration of available elements and heavy metals for plants. The total concentration of heavy metals (Cr, Ni, and Sr) exceeded the critical thresholds in all surface soils, while the contribution of water-soluble and exchangeable fractions of Cu, Fe, Co, and Cr was negligible across the selected gardens. At the same soil depth, the PLI was highest for RG3 (3.6) at 0.00–0.20 m depth and lowest in RG2 (1.2). The Igeo value for individual elements ranged from 0.08 to 0.12 (Ni), 0.06 to 0.12 (Cr), 0.07 to 0.10 (Zn), 0.10 to 0.18 (Cu), and 0.24 to 0.34 (Co), whereas the value for Mn was 0.01 similar in all gardens. The soil pollution assessments by these indices revealed moderate to considerable (chromium and strontium) heavy metal contamination and accumulation, however, the origin of these metals remain unclear. © 2018, Springer Nature B.V. |
Keywords | enrichment factor; geogenic; pollution load index; wastewater use |
ANZSRC Field of Research 2020 | 410604. Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) |
300404. Crop and pasture biochemistry and physiology | |
410601. Land capability and soil productivity | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Mar Augusthinose College, India |
Indian Institute of Technology, India | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5229/heavy-metal-signatures-in-urban-and-peri-urban-agricultural-soils-across-the-mumbai-metropolitan-region-india
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