Quantifying Heavy Metal Accumulation in Soil and Vegetation Surrounding Industrial Areas: A Comprehensive Environmental Toxicology Study
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Abstract
Background: Industrial activities release significant amounts of heavy metals into the environment, contaminating soil and vegetation. This pollution poses severe risks to ecosystems and human health, making it a crucial area of study.
Objective: To quantify the accumulation of heavy metals in soil and vegetation surrounding industrial areas and assess the ecological risks associated with this contamination.
Methods: The study involved quantitative analysis of soil and plant samples from industrial and control areas. Heavy metals analyzed included lead, cadmium, mercury, arsenic, chromium, and nickel. Methods included atomic absorption spectroscopy for metal quantification, bioaccumulation factor (BAF) calculation for plants, and ecological risk assessment using the ecological risk index (ERI).
Results: Soil samples from industrial zones showed significantly higher concentrations of lead (175 mg/kg), cadmium (8 mg/kg), and chromium (90 mg/kg) compared to control areas (lead: 30 mg/kg, cadmium: 2 mg/kg, chromium: 20 mg/kg). Plant tissues from these areas also revealed elevated levels of lead (12 mg/kg), cadmium (2 mg/kg), and nickel (8 mg/kg), against lower concentrations in control samples (lead: 3 mg/kg, cadmium: 0.5 mg/kg, nickel: 2 mg/kg). The ecological risk index underscored a high risk in industrial zones (ERI = 85) compared to control areas (ERI = 30).
Conclusion: The study highlights the critical contamination of soil and vegetation with heavy metals near industrial zones and the consequent ecological risks. These findings emphasize the need for immediate remediation strategies and stricter regulatory frameworks to mitigate the impacts of this pollution.
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References
Madhav S, Mishra R, Kumari A, Srivastav A, Ahamad A, Singh P, et al. A review on sources identification of heavy metals in soil and remediation measures by phytoremediation-induced methods. International journal of Environmental Science and Technology. 2024;21(1):1099-120.
Alengebawy A, Abdelkhalek ST, Qureshi SR, Wang M-Q. Heavy metals and pesticides toxicity in agricultural soil and plants: Ecological risks and human health implications. Toxics. 2021;9(3):42.
Ali MM, Hossain D, Al-Imran A, Khan M, Begum M, Osman M. Environmental pollution with heavy metals: A public health concern. Heavy metals-their environmental impacts and mitigation. 2021:771-83.
Gui H, Yang Q, Lu X, Wang H, Gu Q, Martín JD. Spatial distribution, contamination characteristics and ecological-health risk assessment of toxic heavy metals in soils near a smelting area. Environmental Research. 2023;222:115328.
Gupta S, Nayek S, Saha R, Satpati S. Assessment of heavy metal accumulation in macrophyte, agricultural soil, and crop plants adjacent to discharge zone of sponge iron factory. Environmental geology. 2008;55:731-9.
Hu B, Shao S, Ni H, Fu Z, Hu L, Zhou Y, et al. Current status, spatial features, health risks, and potential driving factors of soil heavy metal pollution in China at province level. Environmental Pollution. 2020;266:114961.
Ankush, Ritambhara, Lamba S, Deepika, Prakash R. Cadmium in Environment—An Overview. Cadmium Toxicity in Water: Challenges and Solutions. 2024:3-20.
Hu Y, Liu X, Bai J, Shih K, Zeng EY, Cheng H. Assessing heavy metal pollution in the surface soils of a region that had undergone three decades of intense industrialization and urbanization. Environmental Science and Pollution Research. 2013;20:6150-9.
Li Y, Wang J, Xue B, Wang S, Qi P, Sun J, et al. Enhancing the flame retardancy and UV resistance of polyamide 6 by introducing ternary supramolecular aggregates. Chemosphere. 2022;287:132100.
Wang S, Cai L-M, Wen H-H, Luo J, Wang Q-S, Liu X. Spatial distribution and source apportionment of heavy metals in soil from a typical county-level city of Guangdong Province, China. Science of the Total Environment. 2019;655:92-101.
Hu Y, Wang D, Wei L, Zhang X, Song B. Bioaccumulation of heavy metals in plant leaves from Yan׳ an city of the Loess Plateau, China. Ecotoxicology and environmental safety. 2014;110:82-8.
Khademi H, Gabarrón M, Abbaspour A, Martínez-Martínez S, Faz A, Acosta JA. Environmental impact assessment of industrial activities on heavy metals distribution in street dust and soil. Chemosphere. 2019;217:695-705.
Cheng Z, Tang Y, Li E, Wu Q, Wang L, Liu K, et al. Mercury accumulation in soil from atmospheric deposition in temperate steppe of Inner Mongolia, China. Environmental pollution. 2020;258:113692.
Koptsik S, Koptsik G. Assessment of current risks of excessive heavy metal accumulation in soils based on the concept of critical loads: A review. Eurasian Soil Science. 2022;55(5):627-40.
Machender G, Dhakate R, Prasanna L, Govil P. Assessment of heavy metal contamination in soils around Balanagar industrial area, Hyderabad, India. Environmental Earth Sciences. 2011;63:945-53.
Zerizghi T, Guo Q, Tian L, Wei R, Zhao C. An integrated approach to quantify ecological and human health risks of soil heavy metal contamination around coal mining area. Science of the Total Environment. 2022;814:152653.
Wang C, Li P, Kong X, Li H, Zeng J, Luo J, et al. Spatial variability and risk assessment of heavy metals in the soil surrounding solid waste from coking plants in Shanxi, China. Environmental Monitoring and Assessment. 2023;195(1):99.
Wang S, Zeng J, Li P, Wang C, Zhou A, Gao L, et al. Distribution characteristics, risk assessment, and relevance with surrounding soil of heavy metals in coking solid wastes from coking plants in Shanxi, China. Environmental Monitoring and Assessment. 2023;195(12):1399.
Liang Y, Zhou C, Guo Z, Huang Z, Peng C, Zeng P, et al. Removal of cadmium, lead, and zinc from multi-metal–contaminated soil using chelate-assisted Sedum alfredii Hance. Environmental Science and Pollution Research. 2019;26:28319-27.
Xu D-M, Fu R-B, Liu H-Q, Guo X-P. Current knowledge from heavy metal pollution in Chinese smelter contaminated soils, health risk implications and associated remediation progress in recent decades: A critical review. Journal of Cleaner Production. 2021;286:124989.
Malik RN, Husain SZ, Nazir I. Heavy metal contamination and accumulation in soil and wild plant species from industrial area of Islamabad, Pakistan. Pak J Bot. 2010;42(1):291-301.