Understanding the dynamics of heavy metals in a freshwater ecosystem through their toxicity and bioavailability assay
| Autor: | Ajay S. Kalamdhad, Siddhant Dash |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Economics and Econometrics
Chemistry Aquatic ecosystem Geography Planning and Development 0211 other engineering and technologies Sediment Biota Bioconcentration 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Freshwater ecosystem Bioavailability Water column Bioaccumulation Environmental chemistry 021108 energy 0105 earth and related environmental sciences |
| Zdroj: | Environment, Development and Sustainability. 23:16381-16409 |
| ISSN: | 1573-2975 1387-585X |
| DOI: | 10.1007/s10668-021-01349-5 |
| Popis: | The current study investigates on correlating the heavy metal contamination, its distribution, and the human health risk associated with all three components of an aquatic ecosystem. For this purpose, water, sediment, and fish samples (three species, notably Notopterus notopterus, Clarias batrachus, and Channa striata) from Deepor Beel were considered, and their heavy metal contamination and distribution were determined. The corresponding health risks were then evaluated for six different heavy metals; Cr, Cd, Fe, Mn, Cu, and Pb. Pb and Mn were found to significantly impact the non-carcinogenic human health risks for the water column. Simultaneously, Cd was considered to possess the highest potential for both carcinogenic and non-carcinogenic health effects in the sediment column. Cd also played a critical role in the fish samples' bioaccumulation factor, with the liver showing the maximum bioaccumulation potential. Furthermore, children were found to have considerably higher effects (both carcinogenic and non-carcinogenic) than adults. Finally, the sediment column was found to substantially contribute to the bioaccumulation factor in the fish biota, compared to the water column. The results of this investigation will thus prove consequential in designing, monitoring and restoring aquatic ecosystems. |
| Databáze: | OpenAIRE |
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