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Li F, Gong Y, Yang X, Jiang Y, Cen Y, Zhang Z. Distribution characteristics and integrated ecological risks evaluation modelling of microplastics and heavy metals in geological high background soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 944:173602. [PMID: 38848909 DOI: 10.1016/j.scitotenv.2024.173602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/11/2024] [Accepted: 05/26/2024] [Indexed: 06/09/2024]
Abstract
The microplastics (MPs), a novel pollutant, and heavy metals (HMs) significantly affect soil ecology. The study investigated HMs and MPs in Qianxi's high geological background soil, established a model for risk evaluation with MPs types and shapes, and proposed a two-dimensional comprehensive index model for MPs-HMs combined pollution and risk evaluation criterion. The results revealed a high soil Cd concentration, with a mean value of 0.38 mg·kg-1. Additionally, soils from soybean-wheat intercropping-potato-corn rotation (SWI-PCR) exhibited significantly higher concentrations of Hg, As, and Pb compared with those from soybean-wheat intercropping-corn rotation (SWI-CR). Moreover, the soil exhibited a high abundance of MPs (8667.66 ± 3864.26 items·kg-1), mainly characterized by PS and fiber. The mean of adjusted ecological risk index (ARI) for MPs in soil was 525.27, indicating a grade 3 risk. The two-dimensional combined index (TPI) was used to assess the ecological risk of MPs-HMs combined pollution, exhibiting an exceedance rate of 56 % with a mean of 445.07. The risk level of the combined pollution was graded as 6, indicating high risk. The microplastic risk evaluation model and the comprehensive evaluation method of combined pollution established in this study provide a reference for the future risk evaluation of multi-pollutant combined pollution.
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Affiliation(s)
- Fupeng Li
- Key Laboratory of Kast Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Yufeng Gong
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China
| | - Xiuyuan Yang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Yongcheng Jiang
- College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Yunlei Cen
- Key Laboratory of Kast Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Zhenming Zhang
- Key Laboratory of Kast Georesources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, Guizhou, China; College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, Guizhou, China.
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Ma F, Zhu T, Wang Y, Torii S, Wang Z, Zhao C, Li X, Zhang Y, Quan H, Yuan C, Hao L. Adsorption mechanism and remediation of heavy metals from soil amended with hyperthermophilic composting products: Exploration of waste utilization. BIORESOURCE TECHNOLOGY 2024; 410:131292. [PMID: 39153701 DOI: 10.1016/j.biortech.2024.131292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 08/08/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
Due to high humification, hyperthermophilic composting products (HP) show potential for remediating heavy metal pollution. However, the interaction between HP and heavy metals remains unclear. This study investigated the adsorption mechanism and soil remediation effect of HP on heavy metals. The results showed that the maximum adsorption capacity of HP increased by an average of 30.74 % compared to conventional composting products. HP transformed 34.87 % of copper, 42.55 % of zinc, and 35.63 % of lead from exchangeable and reducible forms into residual and oxidizable forms, thus reducing the soil risk level. In conclusion, HP significantly enhanced the adsorption of heavy metals and their transformation from unstable to stable forms, primarily due to the higher content of hydroxyl and carboxyl groups. This study aims to demonstrate the effectiveness of HP for remediating heavy metal pollution and to enhance the understanding of the underlying mechanism, which lays a foundation for waste utilization.
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Affiliation(s)
- Feng Ma
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China; Department of Mechanical and Mathematical Engineering, Kumamoto University, Kumamoto 860-8555, Japan
| | - Tong Zhu
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China.
| | - Youzhao Wang
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
| | - Shuichi Torii
- Department of Mechanical and Mathematical Engineering, Kumamoto University, Kumamoto 860-8555, Japan
| | - Zhipeng Wang
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
| | - Chaoyue Zhao
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
| | - Xu Li
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
| | - Yanping Zhang
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
| | - Haoyu Quan
- Institute of Process Equipment and Environmental Engineering, School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China
| | - Chunli Yuan
- Key Laboratory of Eco-restoration of Regional Contaminated Environment, MOE, Shenyang University, Shenyang 110044, China
| | - Liying Hao
- Department of Pharmaceutical Toxicology, School of Pharmacy, China Medical University, Shenyang 110122, China
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Doku ET, Sylverken AA, Belford JDE. Rhizosphere microbiome of plants used in phytoremediation of mine tailing dams. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:1212-1220. [PMID: 38214673 DOI: 10.1080/15226514.2024.2301994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Rhizospheric microbial communities improve the effectiveness of hyperaccumulators in the phytoremediation of heavy metals. However, limited access to tailing dams and inadequate assessment of plants' phytoremediation potential limit the characterization of native accumulators, hindering the effectiveness of local remediation efforts. This study evaluates the heavy metal sequestration potentials of Pennisetum purpureum, Leucaena leucocephala, and Pteris vittata and their associated rhizospheric microbial communities at the Marlu and Pompora tailing dams in Ghana. The results indicate shoot hyperaccumulation of Cd (334.5 ± 6.3 mg/kg) and Fe (10,647.0 ± 12.6 mg/kg) in P. purpureum and L. leucocephala, respectively. Analysis of rhizospheric bacterial communities revealed the impact of heavy metal contamination on bacterial community composition, associating Fe and Cd hyperaccumulation with Bacillus, Arthrobacter, and Sphingomonas species. This study reports the hyperaccumulation potentials of L. leucocephala and P. purpureum enhanced by associated rhizosphere bacterial communities, suggesting their potential application as an environmentally friendly remediation process of heavy metals contaminated lands.
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Affiliation(s)
- Emmanuel Tetteh Doku
- Department of Pharmaceutical Science, Sunyani Technical University, Sunyani, Ghana
| | | | - J D Ebenezer Belford
- Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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Obiri-Nyarko F, Quansah JO, Asare SV, Fynn OF, Okrah C, Debrah SK, Karikari AY. Determination of threshold values and heavy metal pollution assessment of soils in an industrial area in Ghana. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:546. [PMID: 38743357 DOI: 10.1007/s10661-024-12660-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 04/25/2024] [Indexed: 05/16/2024]
Abstract
Industrial activities have the potential to pollute soils with a wide variety of heavy metals (HMs). In Ghana, however, assessment of HM pollution of soils in industrial areas remains limited. Accordingly, HM soil pollution in one of the industrial areas in Accra, Ghana was assessed. Soil samples were taken and analysed for HMs, including Fe, Zr, Zn, Ti, Sr, Rb, Mn, Pb, Cu, and Co, using X-Ray Fluorescence (XRF). HM geochemical threshold values (GTVs) were determined to establish soil HM pollution levels and identify areas needing remediation. Furthermore, risk assessments were conducted to evaluate the potential ecological and human health risks associated with these metals. The mean concentrations of Fe, Zn, Rb, Sr, Zr, Ti, Mn, Co, Cu, and Pb in the soils were: 27133.83, 147.72, 16.30, 95.95, 307.11, 4663.66, 289.85, 418.54, 44.97, and 112.88 mg/kg, respectively. Generally, the concentrations of HMs decreased with depth, although some lower layers exhibited elevated HM levels. Soil pollution levels were categorized as low for Fe, Rb, Zr, Ti, Mn, Co, and Cu; moderate for Sr and Zn; and considerable for Pb. Notably, the northwestern part of the study area displayed a considerable to very high degree of HM contamination. While HMs in the soils posed low ecological risk, the human health risk assessment indicated potential health effects from Co, particularly in children. The presence of HMs in the soils was noted to originate from both natural geological phenomena and human activities, including industrial operations, agricultural practices, landfill activities, and vehicular emissions.
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Affiliation(s)
- Franklin Obiri-Nyarko
- Groundwater and Geoscience Division, CSIR-Water Research Institute, P.O. Box M32, Accra, Ghana.
| | - Jude Ofei Quansah
- Environmental Chemistry and Sanitation Engineering Division, CSIR-Water Research Institute, P.O. Box M32, Accra, Ghana
| | - Sandra Vincentia Asare
- Groundwater and Geoscience Division, CSIR-Water Research Institute, P.O. Box M32, Accra, Ghana
| | - Obed Fiifi Fynn
- Groundwater and Geoscience Division, CSIR-Water Research Institute, P.O. Box M32, Accra, Ghana
| | - Collins Okrah
- Groundwater and Geoscience Division, CSIR-Water Research Institute, P.O. Box M32, Accra, Ghana
| | - Samuel Kwadwo Debrah
- Groundwater and Geoscience Division, CSIR-Water Research Institute, P.O. Box M32, Accra, Ghana
| | - Anthony Yaw Karikari
- Environmental Chemistry and Sanitation Engineering Division, CSIR-Water Research Institute, P.O. Box M32, Accra, Ghana
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Singh JP, Bottos EM, Van Hamme JD, Fraser LH. Microbial composition and function in reclaimed mine sites along a reclamation chronosequence become increasingly similar to undisturbed reference sites. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 920:170996. [PMID: 38369136 DOI: 10.1016/j.scitotenv.2024.170996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/13/2024] [Accepted: 02/13/2024] [Indexed: 02/20/2024]
Abstract
Mine reclamation historically focuses on enhancing plant coverage to improve below and aboveground ecology. However, there is a great need to study the role of soil microorganisms in mine reclamation, particularly long-term studies that track the succession of microbial communities. Here, we investigate the trajectory of microbial communities of mining sites reclaimed between three and 26 years. We used high-throughput amplicon sequencing to characterize the bacterial and fungal communities. We quantified how similar the reclaimed sites were to unmined, undisturbed reference sites and explored the trajectory of microbial communities along the reclamation chronosequence. We also examined the ecological processes that shape the assembly of bacterial communities. Finally, we investigated the functional potential of the microbial communities through metagenomic sequencing. Our results reveal that the reclamation age significantly impacted the community compositions of bacterial and fungal communities. As the reclamation age increases, bacterial and fungal communities become similar to the unmined, undisturbed reference site, suggesting a favorable succession in microbial communities. The bacterial community assembly was also significantly impacted by reclamation age and was primarily driven by stochastic processes, indicating a lesser influence of environmental properties on the bacterial community. Furthermore, our read-based metagenomic analysis showed that the microbial communities' functional potential increasingly became similar to the reference sites. Additionally, we found that the plant richness increased with the reclamation age. Overall, our study shows that both above- and belowground ecological properties of reclaimed mine sites trend towards undisturbed sites with increasing reclamation age. Further, it demonstrates the importance of microbial genomics in tracking the trajectory of ecosystem reclamation.
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Affiliation(s)
- Jay Prakash Singh
- Department of Natural Resource Sciences, Thompson Rivers University, 805 TRU Way, Kamloops, BC V2C 0C8, Canada.
| | - Eric M Bottos
- Department of Biological Sciences, Thompson Rivers University, 805 TRU Way, Kamloops, BC V2C 0C8, Canada
| | - Jonathan D Van Hamme
- Department of Biological Sciences, Thompson Rivers University, 805 TRU Way, Kamloops, BC V2C 0C8, Canada
| | - Lauchlan H Fraser
- Department of Natural Resource Sciences, Thompson Rivers University, 805 TRU Way, Kamloops, BC V2C 0C8, Canada
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Abdulai PM, Sam K, Onyena AP, Ezejiofor AN, Frazzoli C, Ekhator OC, Udom GJ, Frimpong CK, Nriagu J, Orisakwe OE. Persistent organic pollutants and heavy metals in Ghanaian environment: a systematic review of food safety implications. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:376. [PMID: 38492071 DOI: 10.1007/s10661-024-12500-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/24/2024] [Indexed: 03/18/2024]
Abstract
Advances in industrial and technological innovations have led to significant socio-economic benefits, but with overwhelming negative impacts on the environment. These impacts include the infiltration of organic contaminants into soil, water, and air, posing a threat to the environment and public health. Polybrominated diphenyl ethers (PBDEs), heavy metals, and polycyclic aromatic hydrocarbons (PAHs) are increasingly released as waste, endangering the environment. In countries like Ghana, where regulations are weakly enforced, industrial waste is released uncontrollably, posing threats to public health, environmental integrity, and food systems. This study systematically evaluated existing literature on PBDEs, heavy metals, PAHs, and organic contaminant exposure in Ghana and proposes a roadmap for achieving food safety and protecting the environment and human health. The research identified high mobility of specific heavy metals and risks associated with PBDEs and PAHs in sediments, dumpsites, and various food items. Unregulated dumping of electronic waste with PBDEs raised environmental concerns. An integrated approach is needed to address the multifaceted impact of organic pollutants on public health and ecosystems. Urgent implementation of effective environmental management strategies and regulatory measures is crucial. The study proposed short- to mid-term priorities emphasising the need to foster collaboration and implementing global measures. The mid- to long-term strategy includes a national information surveillance system, local monitoring capacity development, and integrating land contamination controls with food safety legislation. These measures would mitigate risks, ensure sustainable practices, and improve overall food safety management in Ghana, serving as a model for regions facing similar challenges with diverse pollutants.
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Affiliation(s)
- Prosper Manu Abdulai
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, Port Harcourt, Choba, 5323, Nigeria
| | - Kabari Sam
- Department of Marine Environment and Pollution Control, Nigeria Maritime University, Okerenkoko, Nigeria
- School of the Environment, Geography and Geoscience, University of Portsmouth, University House, Winston Churchill Ave, Portsmouth, PO1 2UP, UK
| | - Amarachi Paschaline Onyena
- Department of Marine Environment and Pollution Control, Nigeria Maritime University, Okerenkoko, Nigeria
| | - Anthoneth Ndidi Ezejiofor
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, Port Harcourt, Choba, 5323, Nigeria
| | - Chiara Frazzoli
- Department for Cardiovascular, Endocrine-Metabolic Diseases, and Aging, Istituto Superiore Di Sanità, Rome, Italy
| | - Osazuwa Clinton Ekhator
- Department of Science Laboratory Technology, Faculty of Science, University of Benin, Benin City, Nigeria
| | - Godswill J Udom
- Department of Pharmacology and Toxicology, Federal University Oye-Ekiti, Oye-Ekiti, Nigeria
| | - Caleb Kesse Frimpong
- Department of Biochemistry and Biotechnology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Jerome Nriagu
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Orish Ebere Orisakwe
- African Centre of Excellence for Public Health and Toxicological Research (ACE-PUTOR), University of Port Harcourt, PMB, Port Harcourt, Choba, 5323, Nigeria.
- Advanced Research Centre, European University of Lefke, Lefke, Northern Cyprus, TR-10 Mersin, Turkey.
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Cui W, Mei Y, Liu S, Zhang X. Health risk assessment of heavy metal pollution and its sources in agricultural soils near Hongfeng Lake in the mining area of Guizhou Province, China. Front Public Health 2023; 11:1276925. [PMID: 38026406 PMCID: PMC10667904 DOI: 10.3389/fpubh.2023.1276925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Background Accelerated modern industrial processes, extensive use of pesticides and fertilizers and remaining issues of wastewater irrigation have led to an increasingly severe composite pollution of heavy metals in arable land. Soil contamination can cause significant damage to ecological environments and human health. Mineral resource mining can result in varying degrees of heavy metal pollution in surrounding water systems and soil. As a plateau lake, Hongfeng Lake has a fragile watershed ecosystem. Coupled with the rapid development of the current socio-economy and the ongoing activities of mining, urbanization and agricultural development, the water and soil environment of the lake and arable land are facing serious heavy metal pollution. Therefore, the situation warrants attention. Methods This study focused on characterizing soil types and conducted sampling and laboratory testing on the farmland soil in Hongfeng Lake. The integrated Nemero comprehensive pollution assessment and potential ecological pollution assessment methods were used to evaluate the heavy metal pollution status. The APCS-MLR model was employed to explore the sources of heavy metal pollution. In addition, the human health risk model was used to analyze the association between heavy metal content in cultivated land and human health risks. Results The single-factor pollution of each element was ranked in descending order: Hg > As > Pb > Cr > Cd, with Hg being the main pollutant factor. The entire area was subjected to mild pollution according to the pollution index. Pollution source analysis indicated two main pollution sources. Hg, As, Pb and Cr pollution mainly resulted from Source 1 (industrial and natural activities), accounting for 71.99%, 51.57%, 67.39% and 68.36%, respectively. Cd pollution was mainly attributed to Source 2 (agricultural pollution source), contributing 84.12%. The health risk assessment model shows that heavy metals posed acceptable carcinogenic risks to humans rather than non-carcinogenic risks. As was the main non-carcinogenic risk factor, while Cr was the main carcinogenic risk factor, with higher risks in children than adults. Conclusion Our study identified the heavy metal pollution in farmland soil in Hongfeng Lake, evaluated and analyzed the pollution sources and identified the heavy metal elements in cultivated lands that have the greatest impact on human health risks. The aim of this study is to provide a scientific basis for soil heavy metal pollution control.
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Affiliation(s)
- Wengang Cui
- College of Geography and Environmental Sciences/College of Karst Science, Guizhou Normal University, Guiyang, Guizhou, China
- Key Laboratory of Mountainous Resources and Environmental Remote Sensing Applications, Guiyang, Guizhou Normal University, Guiyang, Guizhou, China
| | - Yan Mei
- College of Geography and Environmental Sciences/College of Karst Science, Guizhou Normal University, Guiyang, Guizhou, China
- Key Laboratory of Mountainous Resources and Environmental Remote Sensing Applications, Guiyang, Guizhou Normal University, Guiyang, Guizhou, China
| | - Suihua Liu
- College of Geography and Environmental Sciences/College of Karst Science, Guizhou Normal University, Guiyang, Guizhou, China
- Key Laboratory of Mountainous Resources and Environmental Remote Sensing Applications, Guiyang, Guizhou Normal University, Guiyang, Guizhou, China
| | - Xinding Zhang
- College of Geography and Environmental Sciences/College of Karst Science, Guizhou Normal University, Guiyang, Guizhou, China
- Key Laboratory of Mountainous Resources and Environmental Remote Sensing Applications, Guiyang, Guizhou Normal University, Guiyang, Guizhou, China
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Amoatey EA, Glover ET, Kpeglo DO, Otoo F, Adotey DK. Ecological and human health risk assessment of potentially toxic elements in water and soils within a crude oil waste management facility, Southwestern Ghana. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1371. [PMID: 37880424 DOI: 10.1007/s10661-023-11923-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 09/30/2023] [Indexed: 10/27/2023]
Abstract
Crude oil waste management is challenging due to the diverse constituents of the waste and its consequent impact on valued environmental receptors (water and soil). Characterization of the potentially toxic elements (PTEs) in soils and water within the surroundings of crude oil waste management facility is imperative, to aid evaluation of potential risks. The study assessed the potential environmental and human health risks posed by PTEs in soil and water from surroundings and adjoining settlement communities. A total of forty-four (44) samples were analyzed for PTEs (Cr, Pb, Zn, Co, Mn, Ni, Hg, Fe, As, Cu, Hg, and Cd) and physicochemical properties in both matrices. The total carcinogenic risk (TCR) for adults and children in the neighbouring community was 4.73 × 10-6 and 1.2 × 10-4, respectively, which was due to the high carcinogenic slope factor of arsenic. A strong correlation was observed between the PTEs and physicochemical properties, and their health risk was attributed to both geogenic and anthropogenic factors. The study indicated that the human health and ecological risk values obtained were within acceptable limits, with the waste management facility posing a higher risk in comparison to the nearby community. These risks may be attributed to the specific nature and intensity of the activities conducted at the facility. Hence, there is the need for continuous promotion of occupational and public awareness on the health and environmental impact of crude oil waste management.
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Affiliation(s)
- Edith A Amoatey
- Graduate School of Nuclear and Allied Sciences, University of Ghana, P.O. Box AE 1, Kwabenya, Accra, Ghana.
- Radiation Protection Institute, Ghana Atomic Energy Commission, P.O Box LG 80, Legon, Accra, Ghana.
| | - Eric T Glover
- Graduate School of Nuclear and Allied Sciences, University of Ghana, P.O. Box AE 1, Kwabenya, Accra, Ghana
- Radiation Protection Institute, Ghana Atomic Energy Commission, P.O Box LG 80, Legon, Accra, Ghana
| | - David O Kpeglo
- Graduate School of Nuclear and Allied Sciences, University of Ghana, P.O. Box AE 1, Kwabenya, Accra, Ghana
- Radiation Protection Institute, Ghana Atomic Energy Commission, P.O Box LG 80, Legon, Accra, Ghana
| | - Francis Otoo
- Graduate School of Nuclear and Allied Sciences, University of Ghana, P.O. Box AE 1, Kwabenya, Accra, Ghana
- Radiation Protection Institute, Ghana Atomic Energy Commission, P.O Box LG 80, Legon, Accra, Ghana
| | - Dennis K Adotey
- Graduate School of Nuclear and Allied Sciences, University of Ghana, P.O. Box AE 1, Kwabenya, Accra, Ghana
- National Nuclear Research Institute, Ghana Atomic Energy Commission, P.O Box LG 80, Legon, Accra, Ghana
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Liu X, Chi H, Tan Z, Yang X, Sun Y, Li Z, Hu K, Hao F, Liu Y, Yang S, Deng Q, Wen X. Heavy metals distribution characteristics, source analysis, and risk evaluation of soils around mines, quarries, and other special areas in a region of northwestern Yunnan, China. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:132050. [PMID: 37459760 DOI: 10.1016/j.jhazmat.2023.132050] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/09/2023] [Accepted: 07/10/2023] [Indexed: 07/26/2023]
Abstract
In this study, based on the assessment of soil heavy metals (HMs) pollution using relevant indices, a comprehensive approach combined network environ analysis (NEA), human health risk assessment (HHRA) method and positive definite matrix factor (PMF) model to quantify the risks among ecological communities in a special environment around mining area in northwest Yunnan, calculated the risk to human health caused by HMs in soil, and analyzed the pollution sources of HMs. The integrated risks for soil microorganisms, vegetations, herbivores, and carnivores were 2.336, 0.876, 0.114, and 0.082, respectively, indicating that soil microorganisms were the largest risk receptors. The total hazard indexes (HIT) for males, females, and children were 0.542, 0.591, and 1.970, respectively, revealing a relatively high and non-negligible non-carcinogenic risks (NCR) for children. The total cancer risks (TCR) for both females and children exceeded 1.00E-04, indicating that soil HMs posed carcinogenic risks (CR) to them. Comparatively, Pb was the high-risk metal, accounting for 53.76%, 57.90%, and 68.09% of HIT in males, females, and children, respectively. PMF analysis yielded five sources of pollution, F1 (industry), F2 (agriculture), F3 (domesticity), F4 (nature), and F5 (traffic).
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Affiliation(s)
- Xin Liu
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Huajian Chi
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Zhiqiang Tan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xiaofang Yang
- College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yiping Sun
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Zongtao Li
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Kan Hu
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Fangfang Hao
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Yong Liu
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Shengchun Yang
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China
| | - Qingwen Deng
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China.
| | - Xiaodong Wen
- College of Pharmacy, Dali University, Dali, Yunnan 671000, China.
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Jiang Y, Hu B, Shi H, Yi L, Chen S, Zhou Y, Cheng J, Huang M, Yu W, Shi Z. Pollution and risk assessment of potentially toxic elements in soils from industrial and mining sites across China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 336:117672. [PMID: 36967691 DOI: 10.1016/j.jenvman.2023.117672] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/01/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Potentially toxic elements in soils (SPTEs) from industrial and mining sites (IMSs) often cause public health issues. However, previous studies have either focused on SPTEs in agricultural or urban areas, or in a single or few IMSs. A systematic assessment of the pollution and risk levels of SPTEs from IMS at the national scale is lacking. Here, we obtained SPTE (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) concentrations from IMSs across China based on 188 peer-reviewed articles published between 2004 and 2022 and quantified their pollution and risk levels using the pollution index and risk assessment model, respectively. The results indicated that the average concentrations of the eight SPTEs were 4.42-270.50 times the corresponding background values, and 19.58% of As, 14.39% of Zn, 12.79% of Pb, and 8.03% of Cd exceeded the corresponding soil risk screening values in these IMSs. In addition, 27.13% of the examined IMS had one or more SPTE pollution, mainly distributed in the southwest and south central China. On the examined IMSs, 81.91% had moderate or severe ecological risks, which were mainly caused by Cd, Hg, As, and Pb; 23.40% showed non-carcinogenic risk and 11.70% demonstrated carcinogenic risk. The primary exposure pathways of the former were ingestion and inhalation, while that for the latter was ingestion. A Monte Carlo simulation also confirmed the health risk assessment results. As, Cd, Hg, and Pb were identified as priority control SPTEs, and Hunan, Guangxi, Guangdong, Yunnan, and Guizhou were selected as the key control provinces. Our results provide valuable information for public health and soil environment management in China.
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Affiliation(s)
- Yefeng Jiang
- Institute of Agricultural Remote Sensing and Information Technology Application, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Department of Land Resource Management, School of Tourism and Urban Management, Jiangxi University of Finance and Economics, Nanchang, 330013, China
| | - Bifeng Hu
- Department of Land Resource Management, School of Tourism and Urban Management, Jiangxi University of Finance and Economics, Nanchang, 330013, China
| | - Huading Shi
- Technical Centre for Soil, Agricultural and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China
| | - Lina Yi
- China Environmental United Certification Center Co., Ltd., Beijing, 100029, China
| | - Songchao Chen
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311200, China
| | - Yin Zhou
- Institute of Land and Urban-Rural Development, Zhejiang University of Finance and Economics, Hangzhou, 310018, China
| | - Jieliang Cheng
- Zhejiang Cultivated Land Quality and Fertilizer Management Station, Hangzhou, 310009, China
| | - Mingxiang Huang
- Information Center of Ministry of Ecology and Environment, Beijing, 100029, China
| | - Wu Yu
- Institute of Agricultural Remote Sensing and Information Technology Application, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhou Shi
- Institute of Agricultural Remote Sensing and Information Technology Application, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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Hou Y, Zhao Y, Lu J, Wei Q, Zang L, Zhao X. Environmental contamination and health risk assessment of potentially toxic trace metal elements in soils near gold mines - A global meta-analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 330:121803. [PMID: 37187277 DOI: 10.1016/j.envpol.2023.121803] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/24/2023] [Accepted: 05/09/2023] [Indexed: 05/17/2023]
Abstract
Gold mining is the most important anthropogenic source of heavy metal emissions into the environment. Researchers have been aware of the environmental impacts of gold mining activities and have conducted studies in recent years, but they have only selected one gold mining site and collected soil samples in its vicinity for analysis, which does not reflect the combined impact of all gold mining activities on the concentration of potentially toxic trace elements (PTES) in nearby soils at a global scale. In this study, 77 research papers from 24 countries were collected from 2001 to 2022, and a new dataset was developed to provide a comprehensive study of the distribution characteristics, contamination characteristics, and risk assessment of 10 PTEs (As, Cd, Cr, Co, Cu, Hg, Mn, Ni, Pb, and Zn) in soils near the deposits. The results show that the average levels of all 10 elements are higher than the global background values and are at different levels of contamination, with As, Cd, and Hg at strong contamination levels and serious ecological risks. As and Hg contribute to a greater non-carcinogenic risk to both children and adults in the vicinity of the gold mine, and the carcinogenic risks of As, Cd, and Cu are beyond the acceptable range. Gold mining on a global scale has already caused serious impacts on nearby soils and should be given adequate attention. Timely heavy metal treatment and landscape restoration of extracted gold mines and environmentally friendly approaches such as bio-mining of unexplored gold mines where adequate protection is available are of great significance.
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Affiliation(s)
- Yaru Hou
- College of Geo-exploration Science and Technology, Jilin University, Changchun, 130026, PR China
| | - Yuyan Zhao
- College of Geo-exploration Science and Technology, Jilin University, Changchun, 130026, PR China
| | - Jilong Lu
- College of Geo-exploration Science and Technology, Jilin University, Changchun, 130026, PR China.
| | - Qiaoqiao Wei
- College of Geo-exploration Science and Technology, Jilin University, Changchun, 130026, PR China
| | - Libin Zang
- College of Geo-exploration Science and Technology, Jilin University, Changchun, 130026, PR China
| | - Xinyun Zhao
- College of Geo-exploration Science and Technology, Jilin University, Changchun, 130026, PR China
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Chen L, Zhang Z, Tang Z, Liu Y, Sui Q, Huang W, Liu S, Feng P, Guo Z, He H. Existent forms and ecological risk assessment of uranium and heavy metals in soil at a uranium mining area in northern Guangdong, China. J Radioanal Nucl Chem 2023. [DOI: 10.1007/s10967-023-08870-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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13
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Jiménez-Oyola S, Valverde-Armas PE, Romero-Crespo P, Capa D, Valdivieso A, Coronel-León J, Guzmán-Martínez F, Chavez E. Heavy metal(loid)s contamination in water and sediments in a mining area in Ecuador: a comprehensive assessment for drinking water quality and human health risk. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023:10.1007/s10653-023-01546-3. [PMID: 36997826 DOI: 10.1007/s10653-023-01546-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/16/2023] [Indexed: 06/19/2023]
Abstract
Elevated heavy metal(loid)s concentrations in water lower its quality posing a threat to consumers. This study aims to assess the human health risk caused by heavy metal(loid)s in tap water in Santa Rosa city, Ecuador, and the ecological risk of stream water and sediments in the Santa Rosa River. Concentrations of As, Cd, Cr, Cu, Ni, Pb, and Zn were evaluated in tap waters, stream waters, and sediment samples during the rainy and dry seasons. The Metal Index (MI), Geo-accumulation Index (Igeo), Potential Ecological Risk Index (PERI), and the levels of carcinogenic (CR) and non-carcinogenic risk (HQ) were determined. The results revealed severe pollution levels, mainly in Los Gringos and El Panteon streams, both tributaries of the Santa Rosa River, the primary water source for Santa Rosa inhabitants. More than 20% of the surface water samples showed severe contamination (MI > 6), and 90% of the tap water samples presented a MI value between 1 and 4, which indicates slight to moderate pollution. Drinking water displayed high levels of As, with 83% of the tap water samples collected from households in the dry season above the recommended concentration set by the World Health Organization and Ecuadorian legislation. The Igeo-Cd in the sediment samples was significantly high (Igeo > 3), and the PERI showed very high ecological risk (PERI > 600), with Cd as the main pollutant. HQ and CR were above the safe exposure threshold, suggesting that residents are at risk from tap water consumption, with As being the primary concern.
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Affiliation(s)
- Samantha Jiménez-Oyola
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador.
| | - Priscila E Valverde-Armas
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Paola Romero-Crespo
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Diego Capa
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Abner Valdivieso
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Jonathan Coronel-León
- Facultad de Ingeniería Mecánica y Ciencias de la Producción, Centro de Investigaciones Biotecnológicas del Ecuador, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo, Km 30.5, Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Fredy Guzmán-Martínez
- Mexican Geological Survey (SGM), Boulevard Felipe Angeles, Km. 93.50-4, 42083, Pachuca, Hidalgo, Mexico
| | - Eduardo Chavez
- Facultad de Ciencias de la Vida, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo Km 30.5 Vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
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Ecological and human health risks assessment of chromium in soils around artisanal gold mining areas : a case study in central-western côte d’ivoire, West Africa. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00478-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Chen L, Wang J, Guo X, Wu H, He H, Fang L. Pollution characteristics and health risk assessment of potentially toxic elements in soils around China's gold mines: a meta-analysis. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:3765-3777. [PMID: 35037140 DOI: 10.1007/s10653-021-01175-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
Since toxic element pollution is widespread in soils near gold mines due to increasing mining activities, the adverse effects of potentially toxic elements (PTEs) in the soils on ecological systems and human health cannot be ignored. However, assessments of PTE pollution in soils and their ecological-health risks on a national scale are still limited. Here, the concentrations of eight PTEs in soils near gold mines throughout China were obtained from published articles. Based on these data, the pollution levels and ecological-health risks of the eight PTEs in soils were comprehensively estimated. The results showed that the average contents of As, Cr, Cd, Pb, Hg, Cu, Ni, and Zn were 81.62, 79.82, 1.04, 206.03, 2.05, 40.82, 71.82, and 130.42 mg kg-1, respectively, which exceeded the corresponding background values for soils. Most of the examined soils were heavily polluted by Hg and Cd, and higher pollution levels were found in the Henan and Shaanxi Provinces than in other regions. The average potential ecological risk value of all PTEs was 2534.71, indicating the presence of very high risks. Contribution of Hg to the potential ecological risk was more than 80%. For adults, all hazard index (HI) values of noncarcinogenic risks were below the safe level of 1.00. For children, none of the HI values exceeded the safe level, with the exception of As (HI = 1.81); nevertheless, four PTEs (As, Cr, Cu, and Ni) presented unacceptable carcinogenic risks. This study provides scientific basis for controlling PTE contamination and reducing the health risks in soils near gold mines worldwide.
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Affiliation(s)
- Li Chen
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
- CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China
| | - Jingzhe Wang
- MNR Key Laboratory for Geo-Environmental Monitoring of Great Bay Area and Guangdong Key Laboratory of Urban Informatics and Shenzhen Key Laboratory of Spatial Smart Sensing and Services, Shenzhen University, Shenzhen, 518060, China
| | - Xuetao Guo
- State Key Laboratory of soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation CAS and MWR, Yangling, 712100, China
| | - Hao Wu
- College of Urban and Environmental Sciences, Central China Normal University, Wuhan, 420100, China
| | - Haoran He
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
- State Key Laboratory of soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation CAS and MWR, Yangling, 712100, China
| | - Linchuan Fang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China.
- CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China.
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Mtengai K, Ramasamy S, Msimuko P, Mzula A, Mwega ED. Existence of a novel heavy metal-tolerant Pseudomonas aeruginosa strain Zambia SZK-17 Kabwe 1: the potential bioremediation agent in the heavy metal-contaminated area. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:887. [PMID: 36239813 DOI: 10.1007/s10661-022-10565-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 02/25/2022] [Indexed: 06/16/2023]
Abstract
Bacterial biomass may serve as an important environmental cleaning agent to toxic heavy metal ions at the expense of chemical processes which are not environmentally friendly. This study aimed at characterizing bacterial agents which could serve as a potential in situ bioremediation agent at the site of isolation. The characterization was performed using both phenotypic and molecular approaches. A novel Pseudomonas aeruginosa strain Pseudomonas aeruginosa Zambia SZK17 Kabwe1 was successfully isolated, identified, and characterized. The strain showed a promising tolerance to heavy metals such as copper (2 mM), zinc, nickel (2 mM), cobalt (1 mM), and cadmium (0.5 mM) at the laboratory level. The bacterium has shown the bioaccumulation of at least 60% of copper (II) sulfate (0.3655 mg/l) with R = 69.75%, cadmium (II) chloride (0.0241 mg/l) with R = 69.98%, zinc (II) chloride (0.1389 mg/l) with R = 69.91%, nickel (II) chloride (0.1155 mg/l) with R = 69.92%, and cobalt (II) chloride (0.593 mg/l) with R = 69.92%. The highest bioaccumulation has been observed in heavy metals cadmium, zinc, nickel, and cobalt. Characterization of the bacterium on pH has revealed that at a very high pH (≥ 9) and lower (≤ 5.5) pH, the bacterium tended to have reduced growth with optimum growth at pH 8. The high temperature at around 40 °C had a negative effect on the growth performance of the bacterium while optimum growth was observed at 28 °C. This novel P. aeruginosa strain has shown the phenotypic attributes to become a potential bioremediation agent; however, further investigation needs to be done to understand the genes and or molecular mechanisms that drive their tolerance to multiple heavy metals.
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Affiliation(s)
- Karim Mtengai
- Department of Biological Sciences, School of Mathematics and Natural Sciences, The Copperbelt University, Riverside, Jambo Drive, P.O. Box 21692, Kitwe, Zambia
- The Copperbelt University-Africa Center of Excellence for Sustainable Mining (CBU-ACESM), The Copperbelt University, Riverside, Jambo Drive, P.O. Box 21692, Kitwe, Zambia
| | - Subbaiya Ramasamy
- Department of Biological Sciences, School of Mathematics and Natural Sciences, The Copperbelt University, Riverside, Jambo Drive, P.O. Box 21692, Kitwe, Zambia
| | - Peter Msimuko
- Department of Biological Sciences, School of Mathematics and Natural Sciences, The Copperbelt University, Riverside, Jambo Drive, P.O. Box 21692, Kitwe, Zambia
| | - Alexanda Mzula
- Department of Veterinary Microbiology, Parasitology and Biotechnology, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3015, Chuo Kikuu, Morogoro, Tanzania.
| | - Elisa Daniel Mwega
- Department of Veterinary Microbiology, Parasitology and Biotechnology, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3015, Chuo Kikuu, Morogoro, Tanzania
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17
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Liu X, Dadzie AA, Yuan L, Xing S, Zhou X, Xiao S. Analysis and potential ecological risk assessment of heavy metals in surface sediments of the freshwater ecosystem in Zhenjiang City, China. SN APPLIED SCIENCES 2022. [DOI: 10.1007/s42452-022-05127-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
Abstract
Heavy metals contamination in freshwater ecosystems has drawn attention worldwide. It is necessary to investigate heavy metals content and assess their ecological risk in order to protect the aquatic ecosystems. In this study, we collected surface sediment samples from the freshwater ecosystem of the city of Zhenjiang, in China, in both winter and summer. Then, we analyzed the seasonal and spatial distribution patterns of lead (Pb), chromium (Cr), cadmium (Cd), zinc (Zn), and copper (Cu). The contamination factor (CF), enrichment factor (EF), geo-accumulation index (Igeo), and potential ecological risk (Eri) were jointly used to assess the pollution degree and the ecological risk posed to the freshwater ecosystem by the aforementioned elements. Multivariate statistical analysis, including Pearson’s correlation and principal component analysis and cluster analysis, were used to identify potential sources of the investigated metals in this research area. Study results showed that: (1) the average concentrations values were 1.81 mg/kg and 1.15 mg/kg for Cd, 55.3 mg/kg and 62.2 mg/kg for Cu, 88.0 mg/kg and 52.5 mg/kg for Cr, 27.3 mg/kg and 22.8 mg/kg for Pb, 87.0 mg/kg and 271 mg/kg for Zn, in winter and summer, respectively. Amongst the investigated elements, the average concentrations of Cd, Cu, Cr, and Pb, were above the local background values in winter, whereas, Cd, Cu and Zn concentrations were higher than the background values in Zhenjiang; (2) The CF and EF indicated that Cd had a high contamination degree and a significant enrichment compare to others investigated metals in the surface sediment of in this research area. (3) Cd posed moderate, considerable, or very high ecological risks in different sites, while the other elements (i.e., Cu, Cr, Pb, and Zn) presented a low degree of ecological risk. (4) Multivariate statistical analyses results indicated Pb, Cu, and Zn had similar geochemical characteristics, while, Cd and Cr had significant differences with the above elements. Therefore, Pb, Cu, and Zn probably originate from the same sources, while Cd and Cr might have mixed sources, including both natural sources and human activities. Overall, more attention should be paid to Cd for risk assessment in the current study area. The findings of this study provide fundamental information for the evaluation and management of the heavy metals investigated in the freshwater ecosystem of Zhenjiang.
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Wang L, Liang YS, Wu ZB, Liu YS, Xiao YH, Hu T, Gao R, Fang J, Liu J, Wu AP. Exploring the interaction between Cry1Ac protein and Zn 2+, Cd 2+ metal ions by fluorescence quenching and molecular docking approaches. CHEMOSPHERE 2022; 297:134105. [PMID: 35245590 DOI: 10.1016/j.chemosphere.2022.134105] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Bacillus Thuringiensis (Bt) protein has a strong ability to complex with metal ions, which may increase the transport of metal ions in the soil multi-media system. In this study, the interactions between Cry1Ac protein and metal ions (Zn2+ and Cd2+) were investigated through spectroscopies and molecular docking methods. The spectra results showed that both Zn2+ and Cd2+ quenched the fluorescence intensity of Cry1Ac protein through the static quenching. The binding constants with 4-5 orders of magnitude also indicated the interactions between the ions and the Cry1Ac protein. The thermodynamic analysis showed that hydrogen bonds and van der Waals forces were predominant during the processes. In terms of the Förster non-radiation energy transfer theory, the binding distances between metal ions and Cry1Ac protein were approximately 0.21-0.24 nm, indicating the existence of a non-radiative energy transfer between them. Furthermore, molecular docking revealed that the metal ions participated in ligand binding with the Cry1Ac at the locations Asp569, Thr560, Asn564 and Gln566. The present work provided reasonable models helping us further understand the transport effect of heavy metals in the presence of Cry1Ac. The results could provide mechanistic insights into the nature of metal ions-Cry1Ac interactions and offer important information on the toxicity risk of metal ions-Cry1Ac binding interactions.
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Affiliation(s)
- Li Wang
- College of Resources and Environment, Hunan Agricultural University and Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Changsha, 410128, PR China
| | - Yun-Shan Liang
- College of Resources and Environment, Hunan Agricultural University and Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Changsha, 410128, PR China.
| | - Zhi-Bin Wu
- College of Resources and Environment, Hunan Agricultural University and Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Changsha, 410128, PR China
| | - Yi-Song Liu
- College of Veterinary Medicine, Hunan Agricultural University and National and Local Union Engineering Research Center of Veterinary Herbal Medicine Resource and Initiative, Changsha, 410128, PR China
| | - Yun-Hua Xiao
- College of Bioscience and Biotechnology, Hunan Agricultural University and Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Teng Hu
- College of Resources and Environment, Hunan Agricultural University and Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Changsha, 410128, PR China
| | - Rong Gao
- College of Resources and Environment, Hunan Agricultural University and Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Changsha, 410128, PR China
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University and Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Jiao Liu
- College of Resources and Environment, Hunan Agricultural University and Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Changsha, 410128, PR China
| | - Ai Ping Wu
- College of Resources and Environment, Hunan Agricultural University and Hunan Provincial Key Laboratory of Rural Ecosystem Health in Dongting Lake Area, Changsha, 410128, PR China
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Cao J, Xie C, Hou Z. Ecological evaluation of heavy metal pollution in the soil of Pb-Zn mines. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:259-270. [PMID: 34981243 DOI: 10.1007/s10646-021-02505-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/16/2021] [Indexed: 05/17/2023]
Abstract
Soil heavy metal pollution evaluations are a necessary measure for mine ecological control projects. In this study, the heavy metals Pb, Zn and Cd were studied in mining areas, tailings areas, sewage plant areas, residential areas, reclamation areas, and farmland areas. Soil pollution assessments of lead-zinc ore mine soils in the countryside of China are performed based on the index of geoaccumulation (Igeo) and the improved analytic hierarchy process (AHP). Finally, the pollution sources were analyzed by positive matrix factorization (PMF). The Igeo for the heavy metals Pb, Zn and Cd in the mining area reached 5.20, 3.34, and 5.66, respectively. In addition, 80 and 65% of the mining area and tailings area reached extremely strong pollution, respectively. The numerical simulation predicts that the pollution hazard in the southeast of the mine is high and that the pollution is concentrated. The severity of soil pollution in mines derived by the index of improved analytic hierarchy process (PAHP) was as follows: mining area (70.80) > sewage plant area (35.57) > tailings area (30.64) > farmland area (28.40) > residential area (21.11) > reclamation area (10.06). Among the three categories of pollution sources, one includes reclamation area, farmland area and tailings area; one includes sewage plant area and residential area; and one includes mining area. The source contribution of Pb by the phenomenon of indiscriminate discharge of wastewater after ore smelting was as high as 90.4%; The contribution of the blind mining and tailings piling phenomenon of mines to the source of heavy metals Zn and Cd was 81.4 and 90.2%, respectively. This study proposes a reliable scientific method and technical method for evaluating mine soil pollution and provides a guiding basis for mine development and protection.
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Affiliation(s)
- Jie Cao
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China
| | - Chengyu Xie
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, China.
| | - Zhiru Hou
- School of Metallurgy and Environment, Central South University, Changsha, 410083, China
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Lin Y, Ye Y, Liu S, Wen J, Chen D. Effect Mechanism of Land Consolidation on Soil Bacterial Community: A Case Study in Eastern China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19020845. [PMID: 35055667 PMCID: PMC8775918 DOI: 10.3390/ijerph19020845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/27/2021] [Accepted: 12/28/2021] [Indexed: 02/04/2023]
Abstract
Farmland consolidation is an effective tool to improve farmland infrastructures, soil quality, and sustain a healthy farmland ecosystem and rural population, generating contributions to food security and regional sustainable development. Previous studies showed that farmland consolidation regulates soil physical and chemical properties. Soil microorganisms also play an important role in soil health and crop performance; however, few studies reported how farmland consolidation influence soil microecology. Here, we used DNA sequencing technology to compare bacterial community structure in farmlands with and without consolidation. DNA sequencing technology is the most advanced technology used to obtain biological information in the world, and it has been widely used in the research of soil micro-ecological environment. In September 2018, we collected soil samples in Jiashan County, Zhejiang Province, China, and used DNA sequence technology to compare the bacterial community structure in farmlands with and without consolidation. Our results found that (1) farmland consolidation had significant impacts on soil microbial characteristics, which were mainly manifested as changes in microbial biomass, microbial diversity and community structure. Farmland consolidation can increase the relative abundance of the three dominant bacteria phyla and the three fungal dominant phyla, but it also negatively affects the relative abundance of the six dominant bacteria phyla and the three fungal dominant phyla. (2) Farmland consolidation had an indirect impact on soil bacterial community structure by adjusting the soil physical and chemical properties. (3) The impact of heavy metals on bacterial community structure varied significantly under different levels of heavy metal pollution in farmland consolidation areas. There were 6, 3, 3, and 5 bacterial genera that had significant correlations with heavy metal content in cultivated land with low pollution, light pollution, medium pollution, and heavy pollution, respectively. The number of heavy metal-tolerant bacteria in the soil generally increased first and then decreased under heavy metal polluted conditions. Our study untangled the relationship between varied farmland consolidation strategies and bacteria through soil physcicochemical properties and metal pollution conditions. Our results can guide farmland consolidation strategies and sustain soil health and ecological balance in agriculture.
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Affiliation(s)
- Yaoben Lin
- School of Law and Politics, Nanjing Tech University, Nanjing 211816, China;
| | - Yanmei Ye
- Land Academy for National Development (LAND), Zhejiang University, Hangzhou 310058, China; (Y.Y.); (S.L.)
| | - Shuchang Liu
- Land Academy for National Development (LAND), Zhejiang University, Hangzhou 310058, China; (Y.Y.); (S.L.)
| | - Jiahao Wen
- Department of Watershed Sciences, Utah State University, Logan, UT 84321, USA;
| | - Danling Chen
- Department of Land Management, College of Public Administration, Huazhong Agricultural University, Wuhan 430070, China
- Correspondence:
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21
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Nag R, O'Rourke SM, Cummins E. A GIS study to rank Irish agricultural lands with background and anthropogenic concentrations of metal(loid)s in soil. CHEMOSPHERE 2022; 286:131928. [PMID: 34418654 DOI: 10.1016/j.chemosphere.2021.131928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 08/15/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Heavy metal pollution may cause a serious threat to human health and is a global problem. The bio-availability of metals and metalloids (metal (loid)s) in the soil is a dominating parameter for metal (loid) uptake by plants, and which may subsequently be ingested by individuals through the food pathway. This study aimed to develop a novel approach based on a semi-quantitative probability-impact (P-I) matrix with the help of a GIS mapping tool. ArcGIS was used for data analysis, classification, and reclassification of parameters of the model. Nine influencing parameters were selected for a semi-quantitative risk ranking. These are soil pH, soil organic carbon (SOC), soil texture class, slope, field/soil drainage class, Integrated Risk Quotient (IRQ), proximity to mines, urban activity, and potential biosolids application areas. The results revealed that certain areas (including Co. Louth, Co. Wicklow, Co. Wexford) along the East coast of Ireland pose a higher relative risk. Therefore, in-depth quantitative human health risk assessment is proposed considering the potential bioaccumulation of metal (loid)s if the crops are grown on land with elevated levels of metal (loid)s. Furthermore, this work reveals the usefulness of the GIS mapping techniques in risk assessment to rank areas of elevated levels of potential pollutants.
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Affiliation(s)
- Rajat Nag
- Address: University College Dublin School of Biosystems and Food Engineering, Belfield, Dublin, 4, Ireland.
| | - Sharon Mary O'Rourke
- Address: University College Dublin School of Biosystems and Food Engineering, Belfield, Dublin, 4, Ireland.
| | - Enda Cummins
- Address: University College Dublin School of Biosystems and Food Engineering, Belfield, Dublin, 4, Ireland.
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22
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Parvez M. Heavy metals levels and associated health risk assessment of Euphorbia granulata Forssk. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:1998-2008. [PMID: 34363158 DOI: 10.1007/s11356-021-15569-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 07/18/2021] [Indexed: 06/13/2023]
Abstract
Medicinal plants are considered as the safest approach to treat various ailments. However, prolonged consumption of plants containing high levels of heavy metals (HMs) can lead to deleterious consequences. Euphorbia granulata (EG) is therapeutically used in Pakistan and many parts of the world. This study assessed EG from three districts of Khyber Pakhun Khwa, Pakistan, for the levels of seven HMs (Pb, Cd, Cr, Ni, Ag, Hg, and As) and the associated health risks. Non-carcinogenic health risk associated with HMs was assessed from hazard quotients (THQ) and hazard index (HI). THQ values of Hg for Peshawar (1.566) and Mardan (1.897) were above the safe recommended limits (< 1) of USEPA. Overall more than 80% of THQ was contributed by the Hg alone. Total cancer risk (TCR) was calculated using incremental lifetime cancer risk (ILCR). The hazard index (HI) displayed by Peshawar (1.87) and Mardan (2.7) samples indicated the potential adverse health effects due to EG. Furthermore, the TCR for Peshawar (2.2 × 10-4), Mardam (2.3 × 10-4), and Swat (1.4 × 10-4) was also more than US-EPA recommended threshold value (1 × 10-4). Our results unveiled the possibility of carcinogenic health risks with Pb, Cd, Cr, Ni, and As to EG consumers. Due to potential non-carcinogenic and carcinogenic health risk, chronic use of E. granulata is not recommended, particularly from HMs contaminated sites.
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Affiliation(s)
- Mohammad Parvez
- Institute of Biological Sciences, Sarhad University of Science and Information Technology (SUIT), Peshawar, Pakistan.
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23
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Yang F, Yun Y, Li G, Sang N. Heavy metals in soil from gangue stacking areas increases children health risk and causes developmental neurotoxicity in zebrafish larvae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148629. [PMID: 34217090 DOI: 10.1016/j.scitotenv.2021.148629] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/16/2021] [Accepted: 06/19/2021] [Indexed: 06/13/2023]
Abstract
Coal is the main energy source in China, with 4.5 billion metric tons of coal gangue accumulating near the mining areas in the process of coal mining. The objectives of the present study were to identify the health risks to children from soil pollution caused by coal gangue accumulation and to clarify the possible developmental neurotoxicity caused by this accumulation using zebrafish (Danio rerio) as a model. The results reveal that As and seven other heavy metals in soil samples from the gangue dumping area to the downstream villages exhibited distance-dependent concentration variations and posed substantial potential non-carcinogenic risks to local children. Additionally, soil leachate could affect the key processes of early neurodevelopment in zebrafish at critical windows, mainly including the alterations of cytoskeleton regulation (α1-tubulin), axon growth (gap43), neuronal myelination (mbp) and synapse formation (sypa, sypb, and psd95), eventually leading to hypoactivity in the zebrafish larvae. These findings suggest the possible health risks of soil pollution in the coal gangue stacking areas to children, particularly affecting their early neurodevelopment.
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Affiliation(s)
- Fenglong Yang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Yang Yun
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Guangke Li
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China.
| | - Nan Sang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
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24
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Jiménez-Oyola S, García-Martínez MJ, Ortega MF, Chavez E, Romero P, García-Garizabal I, Bolonio D. Ecological and probabilistic human health risk assessment of heavy metal(loid)s in river sediments affected by mining activities in Ecuador. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:4459-4474. [PMID: 33881675 DOI: 10.1007/s10653-021-00935-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 04/11/2021] [Indexed: 06/12/2023]
Abstract
Gold mining is a significant source of metal(loid)s released into the environment. It is an issue of concern due to the potential adverse health effects associated with exposure to toxic elements. This study aimed to assess the ecological and human health risk caused by heavy metal(loid)s exposure in river sediments in Ponce Enríquez, one of the most important mining sites in Ecuador. Concentrations of As, Cd, Cu, Pb, and Zn were evaluated in 172 sediment samples to determine the Potential ecological risk (RI) and the carcinogenic (CR) and non-carcinogenic risk (HQ). The human exposure to polluted sediments during recreational activities was computed using Bayesian probabilistic models. Residents were randomly surveyed to adjust the risk models to the specific population data. More than 68% of the sampling stations pose a severe As and Cd ecological risk index ([Formula: see text] > 320). Likewise, residents exposed to river sediments showed a non-acceptable carcinogenic risk by incidental ingestion, being As the primary contributor to overall cancer in both children and adults receptors. Moreover, non-carcinogenic risk through the incidental ingestion of sediments was above the safe limit for children. This is the first study conducted in a mining region in Ecuador that reveals the severe levels of ecological and human health risk to which the population is exposed. These results can be applied as a baseline to develop public health strategies to monitor and reduce the health hazards of the residents of mining communities.
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Affiliation(s)
- Samantha Jiménez-Oyola
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003, Madrid, Spain
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - María-Jesús García-Martínez
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003, Madrid, Spain.
| | - Marcelo F Ortega
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003, Madrid, Spain
| | - Eduardo Chavez
- Facultad de Ciencias de la Vida, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Paola Romero
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Iker García-Garizabal
- Facultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - David Bolonio
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003, Madrid, Spain
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25
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Montalván-Olivares DM, Santana CS, Velasco FG, Luzardo FHM, Andrade SFR, Ticianelli RB, Armelin MJA, Genezini FA. Multi-element contamination in soils from major mining areas in Northeastern of Brazil. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:4553-4576. [PMID: 33900510 DOI: 10.1007/s10653-021-00934-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 04/10/2021] [Indexed: 06/12/2023]
Abstract
Mining has become one of the main factors in the global biogeochemical cycle of potentially toxic elements. Therefore, it is considered one of the anthropogenic activities with the greatest negative impact on the environment. These impacts are maximized in semiarid regions, where mining activities can lead to soil degradation and decrease in land productivity. This study aimed to assess the level of contamination in natural, urban, and agricultural soils of three important mining areas, where approximately 80,000 people live, and pollution levels have never been determined before. For this purpose, soil samples were collected around iron, uranium, and vanadium mines, as well as in the main human settlements of the region. The concentrations of 34 elements were determined by instrumental neutron analysis activation (INAA) and inductively coupled plasma optical emission spectrometry (ICP OES) techniques. Pollution indices (CF, EF, mCd, PLI, and REEP) revealed that there is a moderate to heavy level of pollution for 89% of the analyzed elements. Additionally, an extreme contamination level was observed in 78% of the samples, for at least one element. Statistical analyses were performed to identify patterns in the distribution and common sources of pollution. The results suggest that the concentrations for Al, Ba, Hf, Na, Pb, Rb, REE, Ta, Th, U, Zn, and Zr are associated with geogenic causes. However, the influence of anthropogenic sources such as agriculture and mining on the accumulation of these elements in soils should not be disregarded. In contrast, the contents of As, Br, Cd, Co, Cr, Cs, Cu, Fe, K, Mn, Ni, Sc, Ti, and V reflect the direct impact of anthropogenic sources.
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Affiliation(s)
- D M Montalván-Olivares
- Center for Research in Radiation Sciences and Technologies (CPqCTR), State University of Santa Cruz (UESC), Highway Jorge Amado km 16, Ilhéus, Bahia, 45662-900, Brazil.
| | - C S Santana
- Center for Research in Radiation Sciences and Technologies (CPqCTR), State University of Santa Cruz (UESC), Highway Jorge Amado km 16, Ilhéus, Bahia, 45662-900, Brazil
| | - F G Velasco
- Center for Research in Radiation Sciences and Technologies (CPqCTR), State University of Santa Cruz (UESC), Highway Jorge Amado km 16, Ilhéus, Bahia, 45662-900, Brazil
| | - F H M Luzardo
- Center for Research in Radiation Sciences and Technologies (CPqCTR), State University of Santa Cruz (UESC), Highway Jorge Amado km 16, Ilhéus, Bahia, 45662-900, Brazil
| | - S F R Andrade
- Center for Research in Radiation Sciences and Technologies (CPqCTR), State University of Santa Cruz (UESC), Highway Jorge Amado km 16, Ilhéus, Bahia, 45662-900, Brazil
| | - R B Ticianelli
- Instituto de Pesquisas Energéticas e Nucleares, IPEN, CNEN/SP, Av. Prof. Lineu Prestes 2242, São Paulo, 05508-000, Brazil
| | - M J A Armelin
- Instituto de Pesquisas Energéticas e Nucleares, IPEN, CNEN/SP, Av. Prof. Lineu Prestes 2242, São Paulo, 05508-000, Brazil
| | - F A Genezini
- Instituto de Pesquisas Energéticas e Nucleares, IPEN, CNEN/SP, Av. Prof. Lineu Prestes 2242, São Paulo, 05508-000, Brazil
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26
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Madanan MT, Varghese GK, Shah IK. Heavy metal phytoremediation potential of the roadside forage Chloris barbata Sw. (swollen windmill grass) and the risk assessment of the forage-cattle-human food system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:45096-45108. [PMID: 33860427 DOI: 10.1007/s11356-021-13840-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
This study presents the assessment of the risks incidental to the growth of the common tropical grass species Chloris barbata Sw. (swollen windmill grass) on road margins contaminated with Pb and Cd. Pot experiments were first carried out to quantify the Pb and Cd accumulation potential of the plant species in various plant parts as a function of the metal concentration in soil. C. barbata was found to be a hyperaccumulator for Cd (BCF>1, for aerial parts) and an excluder of Pb (BCF<1, for aerial parts). As the plant was found to accumulate Pb in its roots with TF<1, it can be considered a phytostabilizer of Pb. The mathematical relationship developed between soil concentrations of Pb and Cd and their corresponding concentrations in aerial parts were used in combination with the concentrations of these heavy metals reported in roadside soils to obtain estimates of their accumulation in the forage and consequently in the animal organs. Risk to the consumers of offal was estimated. It was found that the consumption of kidney meat was riskier than the consumption of liver meat. Furthermore, it was seen that despite the nearly two order less concentrations of Cd in roadside soils compared to Pb, it was posing a higher risk. For the median concentrations of Pb reported in roadside soils and cattle feeding exclusively on C. barbata growing on roadside soils, the HQ exceeded 1 for weekly consumption of kidney meat above 650 g. For median Cd concentrations, consumption of kidney meat above 230 g/week resulted in HQ>1. The scenario considered for risk assessment is significant for India, where stray grazing of cattle on road margins is common and offal offers a cheap source of animal protein for the economically poor.
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27
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Jiménez-Oyola S, Chavez E, García-Martínez MJ, Ortega MF, Bolonio D, Guzmán-Martínez F, García-Garizabal I, Romero P. Probabilistic multi-pathway human health risk assessment due to heavy metal(loid)s in a traditional gold mining area in Ecuador. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 224:112629. [PMID: 34399125 DOI: 10.1016/j.ecoenv.2021.112629] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 08/05/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
Mining operations are important causes of environmental pollution in developing countries where mining waste management is not adequate. Consequently, heavy metal(loid)s are easily released into the environment, being a potential risk to human health. This study carries out a Bayesian probabilistic human health risk assessment, related to multi-pathway exposure to heavy metal(loid)s in a gold mining area in Southern Ecuador. Concentrations of As, Cd, Cr, Cu, Ni, Pb, and Zn in tap water, surface water, and soil samples, were analyzed to assess the potential adverse human health effects based on the Hazard Index (HI) and Total cancer risk (TCR). Adults and children residents were surveyed to adjust their exposure parameters to the site-specific conditions. Exposure to heavy metal(loid)s resulted in unacceptable risk levels for human health in the two age groups, both carcinogenic (TCR > 1 × 10-5) and non-carcinogenic (HI > 1) through ingestion of tap water and incidental ingestion of surface water. Sensitivity analysis showed that As concentration in waters and exposure frequency were the main contributors to risk outcome. Exposure to soil via accidental ingestion and dermal contact was below the safety limit, not posing a risk to human health. These findings can provide a baseline for the environmental management of the mining area and indicate the need for further research on As pollution in water and its implications on the health of the inhabitants of mining communities.
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Affiliation(s)
- Samantha Jiménez-Oyola
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Ciencias de la Tierra, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador; Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003 Madrid, Spain.
| | - Eduardo Chavez
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ciencias de la Vida, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - María-Jesús García-Martínez
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003 Madrid, Spain
| | - Marcelo F Ortega
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003 Madrid, Spain
| | - David Bolonio
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003 Madrid, Spain
| | - Fredy Guzmán-Martínez
- Department of Energy and Fuels, E.T.S. Ingenieros de Minas y Energía, Universidad Politécnica de Madrid, Ríos Rosas 21, 28003 Madrid, Spain; Mexican Geological Survey, Boulevard Felipe Angeles Km. 93.50-4, 42083 Pachuca, Mexico
| | - Iker García-Garizabal
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Ciencias de la Tierra, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
| | - Paola Romero
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Ciencias de la Tierra, Campus Gustavo Galindo km 30.5 vía Perimetral, P.O. Box 09-01-5863, Guayaquil, Ecuador
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28
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Neris JB, Montalván Olivares DM, Santana CS, Emenike PC, Velasco FG, Andrade SFR, Paranhos CM. HERisk: An improved spatio-temporal human health risks assessment software. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 772:145044. [PMID: 33581519 DOI: 10.1016/j.scitotenv.2021.145044] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/24/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Risk assessment is considered an essential tool to assist in the management and mitigation of polluted areas, especially those associated with economic activities that significantly degrade the environment, such as mining. However, most of the methodologies of risk assessment adopt the deterministic approach of using a fixed value for ascertaining the hazards derived from exposure to chemical pollutants. However, this is not the case of the Human, Ecological and Radiological Risk (HERisk) code, which allows space-time assessments of ecological, radiological, and human health risks. Indeed, this work aims to describe this new software (enhanced version of HHRISK), which not only improves the performance of the code but also increases its applicability and versatility. To showcase its usefulness in evaluating ecological pollution and human health risk were studied the contents of potentially toxic elements (Co, Cu, Fe, Mn, Ni, Pb, and Zn) in soils and surface waters from the nickel mining area in the municipality of Itagibá (Bahia, Brazil). The obtained results showed that metals are non-homogeneous distributed, suggesting the presence of local enrichment sources, mainly related to human activities. The statistical analyses carried out revealed that mining and agricultural activities are possibly responsible for the contents of these pollutants in both soils and surface waters. The calculated ecological indices of pollution confirmed anthropogenic pollution around the mining area, especially in the locations closest to sterile waste piles. The results of the human health risk assessment revealed that the ingestion of meat and contaminated water are the main routes for entering the potentially toxic elements to the human body and that Co is the chemical specie that poses the highest risk in the entire region. The hazard index (HI) values indicated that the whole area around the mine should be considered as a high risk for human health.
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Affiliation(s)
- Jordan Brizi Neris
- Department of Chemistry, Federal University of São Carlos, highway Washington Luis Km 235, CEP 13565-905 São Carlos, São Paulo, Brazil.
| | - Diango M Montalván Olivares
- Department of Exact and Technological Sciences, State University of Santa Cruz, highway Jorge Amado - Km 16, CEP 45662-900 Ilhéus, Bahia, Brazil
| | - Caroline Santos Santana
- Department of Exact and Technological Sciences, State University of Santa Cruz, highway Jorge Amado - Km 16, CEP 45662-900 Ilhéus, Bahia, Brazil
| | - PraiseGod Chidozie Emenike
- Department of Civil Engineering, Covenant University, Ota, Ogun State, Nigeria; Cranfield Water Science Institute, School of Water, Energy and Environment, Cranfield University, MK43 0AL Bedford, United Kingdom.
| | - Fermin G Velasco
- Department of Exact and Technological Sciences, State University of Santa Cruz, highway Jorge Amado - Km 16, CEP 45662-900 Ilhéus, Bahia, Brazil
| | - Sergio Fred Ribeiro Andrade
- Department of Exact and Technological Sciences, State University of Santa Cruz, highway Jorge Amado - Km 16, CEP 45662-900 Ilhéus, Bahia, Brazil.
| | - Caio Marcio Paranhos
- Department of Chemistry, Federal University of São Carlos, highway Washington Luis Km 235, CEP 13565-905 São Carlos, São Paulo, Brazil
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29
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Barjoee SS, Abadi SZM, Elmi MR, Varaoon VT, Nikbakht M. Evaluation of trace elements pollution in deposited dust on residential areas and agricultural lands around Pb/Zn mineral areas using modified pollution indices. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2021; 19:753-769. [PMID: 34150271 PMCID: PMC8172829 DOI: 10.1007/s40201-021-00643-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/01/2021] [Indexed: 05/28/2023]
Abstract
Dust deposited on residential and agricultural lands can have serious consequences for the ecosystem when toxic trace elements are present. This study aimed to assess the ecological risk of the trace elements found in the deposited dust around the Mehdi Abad Pb/Zn mine, Yazd, Iran, using several modified pollution indices. The dust samples were collected by the grid method and a Marble Dust Collector (MDCO) sampler to evaluate the concentration of thirty trace elements: nickel (Ni), lead (Pb), barium (Ba), beryllium (Be), chromium (Cr), copper (Cu), dysprosium (Dy), lanthanum (La), lithium (Li), niobium (Nb), tin (Sn), neodymium (Nd), praseodymium (Pr), rubidium (Rb), Ferrum (Fe), sulfur (S), selenium (Se), strontium (Sr), tantalum (Ta), terbium (Tb), zirconium (Zr), tellurium (Te), thorium (Th), titanium (Ti), uranium (U), vanadium (V), yttrium (Y), ytterbium (Yb), thulium (Tm), and cobalt (Co). This study employed multivariate statistical techniques, including Hierarchical cluster analysis (HCA) and the IDW interpolation technique, as well as modified pollution indices such as Enrichment Factor (EF), Modified Pollution Index (MPI), Modified Potential Ecological Risk Index (MRI), and Modified Hazard Quotient (mHQ). All the statistical data analyses were performed via SPSS Statistics, version 22.00. The HCA results showed that all of these trace elements, except Fe, form a group and had similar behavior. The average levels of all elements in the dust samples except for Cr, S, Sr, Ta, Tb, and Te exceeded the background value. The results confirmed that both anthropogenic activities and natural factors were responsible for the trace elements found in the dust. The average EF value for Pb (43.26) indicated its extremely high enrichment in the study area. The MPI, mHQ, and MRI results showed that 33%, 100%, and 33.33% of the dust samples were in the heavily polluted, extreme severity, and high risk categories, respectively. The IDW analysis results revealed that the highest value of the MRI and mHQ indices was in agricultural lands and residential areas; the predominant wind direction also played a role in transferring the elements from the mine to these areas. In general, the results indicated that mining activities increased the ecological risk in Mehdi Abad due to the presence of trace elements, especially Pb.
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Affiliation(s)
- Saeed Shojaee Barjoee
- Department of Environmental, School of Natural Resources and Desert Studies, Yazd University, Yazd, Iran
| | | | - Mohammad Reza Elmi
- Department of Environmental, School of Natural Resources and Desert Studies, Yazd University, Yazd, Iran
| | - Vahid Talebi Varaoon
- Department of Nature Engineering, School of Agriculture and Natural Resources, Ardakan University, Yazd, Iran
| | - Mojtaba Nikbakht
- Department of Environmental Management and Planning, Graduate Faculty of Environment, Tehran University, Tehran, Iran
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30
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Eren ST, Sungur A, Ekinci H. Trace metal fractions, sources, and risk assessment in sediments from Umurbey Stream (Çanakkale-Turkey). ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:347. [PMID: 34018025 DOI: 10.1007/s10661-021-09134-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 05/17/2021] [Indexed: 06/12/2023]
Abstract
Trace metal contamination has become a worldwide problem for aquatic systems, as sediments act as a sink for trace metals. This study was conducted to assess geochemical fractions, sources and potential risks of trace metals (Cd, Cr, Cu, Ni, Pb, and Zn) in sediments of Umurbey stream (Çanakkale-Turkey). Sediment samples were taken from seven different locations of Umurbey stream. Aqua regia wet digestion procedure was applied to determine total contents of trace metals and BCR sequential extraction procedure was applied to determine geochemical fractions of trace metals. Trace metal total values were ordered as Zn > Pb > Cr > Cu > Ni > Cd. Just because of topography, geology, and agricultural practices, S4, S5, S6, and S7 sampling points had greater total trace metal concentrations than the other locations. Potential mobility of trace metals in sediment samples was ordered as Cd (62.1%) > Zn (60.8%) > Pb (54.8%) > Cu (46.1%) > Cr (43.0%) > Ni (29.7%). Cd, Zn, Pb, and partially Cu were encountered mostly in mobile phases. Multivariate analyses revealed that pollution in sediment samples was originated from not only anthropogenic but also natural factors. Except for Zn, trace metal concentrations were found to be at tolerable levels of biota. When the contamination factor and risk assessment code results were assessed together, it was observed that Cd, Zn, and partially Pb were weakly adsorbed onto sediments, thus might pose risks on environment in the long run.
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Affiliation(s)
- Sadiye Tuğçe Eren
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Çanakkale Onsekiz Mart University, 17020, Çanakkale, Turkey
| | - Ali Sungur
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Çanakkale Onsekiz Mart University, 17020, Çanakkale, Turkey.
| | - Hüseyin Ekinci
- Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Çanakkale Onsekiz Mart University, 17020, Çanakkale, Turkey
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Khelifi F, Caporale AG, Hamed Y, Adamo P. Bioaccessibility of potentially toxic metals in soil, sediments and tailings from a north Africa phosphate-mining area: Insight into human health risk assessment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111634. [PMID: 33213991 DOI: 10.1016/j.jenvman.2020.111634] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 05/25/2023]
Abstract
The risk assessment of phosphate mining/processing industrial activities on the environment and human health is crucial to properly manage and minimize the risks over time. In this work, we studied the inhalation and dermal bioaccessibility of potentially toxic metals (PTM) in different particle-size fractions of urban soil, sediments and tailings from Gafsa-Metlaoui phosphate mining area, to assess afterwards the non-carcinogenic (NCR) and carcinogenic (CR) risks for the health of local citizens and workers constantly exposed to airborne particulate matter (PM) originating from these sources of contamination. Samples were separated in particle-size fractions by centrifugation and consecutive cycles of sedimentation and decanting. The pseudo-total concentrations and bioaccessible fractions of PTM were extracted by aqua regia and in vitro bioaccessibility tests, respectively. Both sediments and tailings showed higher-than-background concentrations of PTM (mainly Cd, Zn and Cr), with a tendency to accumulate these metals in fine particles (<10 μm). In urban soil, only Cd was above the background concentration. The bioaccessibility of PTM via inhalation was significantly higher in artificial lysosomal fluid (ALF) than in simulated epithelial lung fluid (SELF): basically, Cd was the most bioaccessible metal (relative bioaccessibility up to 80%), followed by the medium-to-high bioaccessible Zn (47%), Pb (46%) and Cu (39%), and the least bioaccessible Cr (16%). In synthetic skin surface liquid (NIHS 96-10), only Cd was bioaccessible at worrying extent (20-44%). On the basis of US.EPA risk assessment, the exposure to PTM bioaccessible fractions or pseudo-total concentrations would not cause serious NCR and CR risks for human health. Significant health risks (Hazard Index >1 and CR > 10-4), especially for children, can occur if ingestion route is also considered. The findings underline the need for adequate protection of contaminated soil, sediments and mine tailings laying nearby urban agglomerates, to reduce the health risks for inhabitants and workers of Gafsa-Metlaoui mining area.
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Affiliation(s)
- Faten Khelifi
- Department of Earth Sciences, Faculty of Sciences of Bizerte, University of Carthage, Jarzouna, 7021, Bizerte, Tunisia; Laboratory for the Application of Materials to the Environment, Water and Energy Faculty of Sciences of Gafsa, University of Gafsa, Campus Sidi Ahmed Zarroug, 2112, Gafsa, Tunisia
| | - Antonio G Caporale
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy.
| | - Younes Hamed
- Laboratory for the Application of Materials to the Environment, Water and Energy Faculty of Sciences of Gafsa, University of Gafsa, Campus Sidi Ahmed Zarroug, 2112, Gafsa, Tunisia
| | - Paola Adamo
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy; Interdepartmental Research Centre on the "Earth Critical Zone" for Supporting the Landscape and Agroenvironment Management (CRISP), University of Naples Federico II, Portici, Italy
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Fang H, Gui H, Li J, Yu H, Wang M, Jiang Y, Wang C, Chen C, Zhang Y, Huang Y. Risks Assessment Associated with Different Sources of Metals in Abandoned Soil of Zhuxianzhuang Coal Mine, Huaibei Coalfield (Anhui, China). BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 106:370-376. [PMID: 33392689 DOI: 10.1007/s00128-020-03069-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
In this paper, the 36 topsoil (0-10 cm) samples were collected and the contents of Cr, Mn, Co, Ni, Cu, Zn, As, Cd and Pb were analyzed. The results indicated that the contents of Cu and As in all samples exceeded the soil background values of Anhui province, while the Co and Pb contents were lower than the background values. Geo-statistics and positive matrix factorization were applied to identify the sources of soil heavy metals, which were nature factor (15.7%), industrial activities (21.2%), coal mine (50.9%) and traffic emission (12.2%), respectively. The calculation results of health risk model based on positive matrix factorization model showed that coal mine activities accounted for the largest proportion of total source contribution, followed by industrial activities. In addition, compared with adults, the trend of health risk of children from four sources in three lands were same as adults, but their health risk was higher than adults.
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Affiliation(s)
- Hongxia Fang
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, Anhui, China
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
| | - Herong Gui
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China.
| | - Jun Li
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
- School of Resources and Environmental Engineering of Hefei University of Technology, Hefei, 232000, Anhui, China
| | - Hao Yu
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, Anhui, China
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
| | - Meichen Wang
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, Anhui, China
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
| | - Yaqi Jiang
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, Anhui, China
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
| | - Chunlei Wang
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, Anhui, China
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
| | - Chen Chen
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, Anhui, China
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
| | - Yaru Zhang
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
| | - Yiheng Huang
- National Engineering Research Center of Coal Mine Water Hazard Controlling (Suzhou University), Suzhou, 234000, Anhui, China
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Abstract
Recently, there has been a growing interest in the mining industry in issues related to risk assessment and management, which is confirmed by a significant number of publications and reports devoted to these problems. However, theoretical and application studies have indicated that risk in mining should be analyzed not only in the human factor aspect, but also in strategic (environmental impact) and operational ones. However, there is a lack of research on systematic literature reviews and surveys of studies that would focus on these identified risk aspects simultaneously. Therefore, the purpose of this article is to develop a literature review in the area of analysis, assessment and risk management in the mining sector, published in the last decade and based on the concept of a human engineering system. Following this, a systematic search was performed with the use of Primo multi-search tool following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The main inclusion criteria were: (a) not older than 10 years, (b) article written in English, (c) publication type (scientific article, book, book chapter), (d) published in chosen electronic collections (Springer, Taylor and Francis, Elsevier, Science Direct, JSTOR). This resulted in the selection of the 94 most relevant papers in the area. First, the general bibliometric analysis was conducted. Later, the selected papers in this review were categorized into four groups and the critical review was developed. One of the main advantages of this study is that the results are obtained from different scientific sources/databases thanks to using a multi-search tool. Moreover, the authors identified the main research gaps in the area of the implementation of risk management in the mining industry.
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Fernández-Macías JC, González-Mille DJ, García-Arreola ME, Cruz-Santiago O, Rivero-Pérez NE, Pérez-Vázquez F, Ilizaliturri-Hernández CA. Integrated probabilistic risk assessment in sites contaminated with arsenic and lead by long-term mining liabilities in San Luis Potosi, Mexico. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 197:110568. [PMID: 32283412 DOI: 10.1016/j.ecoenv.2020.110568] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/04/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
Mining environmental liabilities (MEL) in San Luis Potosi are the result of more than 450 years of mining activity, which has contaminated the soil mainly with arsenic (As) and lead (Pb) in several areas. Risk assessments are used to estimate the possibility of the occurrence of adverse effects on human health or on ecological receptors; and the most accessible way of performing them is through probabilistic estimates such as the Latin Hypercube Sampling (LHS) model. Therefore, the aim of this study was to carry out an Integrated Probabilistic Environmental Risk Assessment (IPERA) for the estimation of health risks in infants and rodents. The mean concentrations of As and Pb in soil were significantly higher (p<0.05) in all contaminated sites than in their respective reference sites. Villa de la Paz was the site with the highest mean concentration of As (1374 mg/kg), while Charcas was the one with the highest level of Pb (12,929 mg/kg). The Hazard Quotient (HQ) was calculated and Villa de la Paz had the highest values of As in both rodents (11.994) and children (39.32), and Charcas showed the highest values of Pb in both (24.971 and 31.668 for rodents and children respectively). The cumulative hazard Index (HI) reveals there is a very significant health risk due to As and Pb exposure for both rodents and children in contaminated areas of these mining communities.
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Affiliation(s)
- Juan C Fernández-Macías
- Facultad de Medicina-Centro de Investigación Aplicada en Ambiente y Salud, Universidad Autónoma de San Luis Potosí, Coordinación para la Aplicación de la Ciencia y la Tecnología- (CIACyT-CIAAS), San Luis Potosí, México
| | - Donaji J González-Mille
- Cátedras Consejo Nacional de Ciencia y Tecnologí (CONACyT), Universidad Autónoma de San Luis Potosí, México
| | | | - Omar Cruz-Santiago
- Facultad de Medicina-Centro de Investigación Aplicada en Ambiente y Salud, Universidad Autónoma de San Luis Potosí, Coordinación para la Aplicación de la Ciencia y la Tecnología- (CIACyT-CIAAS), San Luis Potosí, México
| | - Norma E Rivero-Pérez
- Centro Regional de Investigación en Salud Pública-Instituto Nacional de Salud Pública (CRISP-INSP), Tapachula, Chiapas, México
| | - Francisco Pérez-Vázquez
- Cátedras Consejo Nacional de Ciencia y Tecnologí (CONACyT), Universidad Autónoma de San Luis Potosí, México
| | - César A Ilizaliturri-Hernández
- Facultad de Medicina-Centro de Investigación Aplicada en Ambiente y Salud, Universidad Autónoma de San Luis Potosí, Coordinación para la Aplicación de la Ciencia y la Tecnología- (CIACyT-CIAAS), San Luis Potosí, México.
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Wu Z, Zhang L, Xia T, Jia X, Wang S. Heavy metal pollution and human health risk assessment at mercury smelting sites in Wanshan district of Guizhou Province, China. RSC Adv 2020; 10:23066-23079. [PMID: 35520318 PMCID: PMC9054694 DOI: 10.1039/d0ra01004a] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 06/09/2020] [Indexed: 11/21/2022] Open
Abstract
The Wanshan district of Guizhou Province has a long history of mercury mining and smelting. Previous studies have been carried out on heavy metal (HM) pollution in the soil around Wanshan (such as in urban and farmland areas), but these studies have not been conducted at mercury smelting sites. In this study, the distribution characteristics of As, Be, Cd, Cr, Cu, Hg, Ni, Sb, Pb and Zn and their sources in the shallow stratum (<10 m) of the mercury smelting site in the Wanshan district were analyzed. Human health risks were evaluated using deterministic risk assessment (DRA) and probabilistic risk assessment (PRA) models. The contribution rates of different HM sources to human health risks were also calculated. The maximum HM concentration in mercury smelting site soil occured in the shallow soil (0-1 m), and the concentration sequences were as follows: 358.51 mg kg-1 (Hg) > 248.6 mg kg-1 (Zn) > 67.42 mg kg-1 (As) > 59.04 mg kg-1 (Ni) > 57.56 mg kg-1 (Pb) > 49.59 mg kg-1 (Cr) > 46.65 mg kg-1 (Sb) > 15.65 mg kg-1 (Cu) > 2.02 mg kg-1 (Be) > 0.78 mg kg-1 (Cd). The variable coefficients (CVs) were 1.64 (As), 0.67 (Be), 3.15 (Cd), 1.89 (Cr), 0.95 (Cu), 3.08 (Hg), 0.79 (Ni), 1.41 (Sb), 0.68 (Pb) and 1.13 (Zn), respectively. The HM concentrations in deep soils (9 m) still exceed the local background values, suggesting that heavy metals in shallow soil have migrated downward in the site. Three pollution sources identified with the shallow soil (0-1 m) HMs using the positive matrix factorization (PMF) model, were mercury smelting and coal combustion mixed sources (As, Hg and Zn), parent material sources (Ni, Cu, Cr, Cd and Sb) and wastewater discharge sources (Cu and Pb), respectively. DRA indicated that oral ingestion was the main pathway affecting the carcinogenic risk (CR) and hazard quotient (HQ) of heavy metals. The total-CR of twenty-five sampling points is between 1.219 × 10-6 and 3.446 × 10-4, and the total-HQ is between 0.37 and 43.56. PRA results indicated that DRA will underestimate the health risk of all populations in Guizhou Province, especially female, and BWa is the most influential variable for the PRA results. Smelting and coal combustion mixed sources contributed the most CR (99.29%) and with an HQ of 89.38% were the major sources of pollution affecting human health.
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Affiliation(s)
- Zhiyuan Wu
- Beijing Municipal Research Institute of Environmental Protection, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites 100037 Beijing China
| | - Lina Zhang
- Beijing Municipal Research Institute of Environmental Protection, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites 100037 Beijing China
| | - Tianxiang Xia
- Beijing Municipal Research Institute of Environmental Protection, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites 100037 Beijing China
| | - Xiaoyang Jia
- Beijing Municipal Research Institute of Environmental Protection, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites 100037 Beijing China
| | - Shijie Wang
- Beijing Municipal Research Institute of Environmental Protection, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites 100037 Beijing China
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Sun C, Zhu S, Zhao B, Li W, Gao X, Wang X. Effect of Land Use Conversion on Surface Soil Heavy Metal Contamination in a Typical Karst Plateau Lakeshore Wetland of Southwest China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 17:ijerph17010084. [PMID: 31877641 PMCID: PMC6982003 DOI: 10.3390/ijerph17010084] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 12/02/2022]
Abstract
Land use conversion could directly or indirectly influence heavy metal geochemistry by changing soil properties. The aim of this study was to explore the effect of land use conversion on surface soil heavy metal contamination in the karst plateau lakeshore wetlands of Southwest China. Based on this, a total of 120 soil samples were collected from 30 sites from different types of land uses (farmlands, grasslands and woodlands) around a lake in Suohuangcang National Wetland Park in August 2017. Contents of As, Cd, Cu, Cr, Hg, Pb and Zn were analyzed, and soil heavy metal contamination was assessed in all three land use types. Results showed that land use transformation from farmland to grassland or woodland was not conducive to the release of soil heavy metal. Surface soil of all three land use types have been moderately polluted by As, Cr, Pb, and Zn, and grassland and woodland also had moderate Cd contamination. The pollution load index (PLI) results revealed low heavy metal contamination in grassland and woodland but no contamination in farmland. Although the integrated contamination in the studied region did not pose a serious potential ecological risk (RI < 150), it might affect human health through the water supply and food chain. Therefore, it is necessary to monitor and control As, Cd, Cr, Pb, and Zn concentrations of surface soil through controlling pollutants, improving waste treatment, as well as strengthening supervision and management in the vicinity of the Suohuangcang National Wetland Park.
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Affiliation(s)
- Caili Sun
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China; (C.S.); (B.Z.); (W.L.); (X.G.); (X.W.)
- The Institute of Karst Westland Ecology, Guizhou Minzu University, Guiyang 550025, China
| | - Sixi Zhu
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China; (C.S.); (B.Z.); (W.L.); (X.G.); (X.W.)
- The Institute of Karst Westland Ecology, Guizhou Minzu University, Guiyang 550025, China
- Correspondence:
| | - Bin Zhao
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China; (C.S.); (B.Z.); (W.L.); (X.G.); (X.W.)
- The Institute of Karst Westland Ecology, Guizhou Minzu University, Guiyang 550025, China
| | - Wujiang Li
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China; (C.S.); (B.Z.); (W.L.); (X.G.); (X.W.)
- The Institute of Karst Westland Ecology, Guizhou Minzu University, Guiyang 550025, China
| | - Xiaoye Gao
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China; (C.S.); (B.Z.); (W.L.); (X.G.); (X.W.)
| | - Xiaodan Wang
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, China; (C.S.); (B.Z.); (W.L.); (X.G.); (X.W.)
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