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Jolaosho TL, Elegbede IO, Akintola SL, Jimoh AA, Ndimele PE, Mustapha AA, Adukonu JD. Bioaccumulation dynamics, noncarcinogenic and carcinogenic risks of heavy metals in commercially valuable shellfish and finfish species from the world largest floating slum, Makoko, Nigeria. MARINE POLLUTION BULLETIN 2024; 207:116807. [PMID: 39128235 DOI: 10.1016/j.marpolbul.2024.116807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 08/01/2024] [Accepted: 08/01/2024] [Indexed: 08/13/2024]
Abstract
This study examined ten heavy metals in five species: Macrobrachium vollenhovenii, Penaeus monodon, P. notialis, Chloroscombrus chrysurus, and Pseudotolithus typus, from Makoko floating slum, Lagos Lagoon to discern their bioaccumulation potentials, sources of origin, and health implications. The concentrations were in this order: Fe (4.172-10.176) > Zn (1.310-5.754) > Mn (0.475-2.330) > Cu (0.238-1.735) > Pb (0.121-0.391) > Cd (0.055-0.283) > Co (0.056-0.144) > Ni (0.039-0.121) > Cr (0.022-0.095) > As (0.003-0.031) mg/kg. The MPDI denotes "low toxicity," and the BAF/BSAF revealed that benthic species had higher bioconcentration potentials. Multivariate analyses revealed that heavy metals exhibited mutual relationships during chemical transport, and their sources were both geogenic and human-induced. The HI values were below 1, and the TCR values were below the threshold of 1 × 10-4. This suggests that the probabilities of noncancer and carcinogenic risks in human populations due to long-term consumption of the evaluated species are unlikely.
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Affiliation(s)
- Toheeb Lekan Jolaosho
- Department of Fisheries, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria; Spatial Science, Islands and Sustainability, University of Groningen, Netherlands.
| | - Isa Olalekan Elegbede
- Department of Fisheries, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria.
| | - Shehu Latunji Akintola
- Department of Fisheries, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria.
| | | | - Prince Emeka Ndimele
- Department of Fisheries, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria.
| | | | - Joshua Damilola Adukonu
- Department of Fisheries, Faculty of Science, Lagos State University, Ojo, Lagos State, Nigeria.
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Su H, Hossain MJ, Uddin SA, Jiang S, Chang Y, Jiang S, Shi X, Liu ZB, He L, Zhang J. Dissolved trace elements in the Ganges-Brahmaputra-Meghna River Basin: A new approach for estimating trace element flux inputs from rivers into the world's oceans. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 363:121389. [PMID: 38850923 DOI: 10.1016/j.jenvman.2024.121389] [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: 10/27/2023] [Revised: 04/01/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
Understanding the changes in the chemical compositions of dissolved trace elements from source to sink is important for determining their spatiotemporal variations and the contributions from each sub-catchment in the Ganges, Brahmaputra, and Meghna Rivers. To estimate weathering and matter transfer in these Rivers and the Ganges-Brahmaputra-Meghna (G-B-M) Estuary, we measured 15 dissolved trace element concentrations from surface and bottom water samples and exchangeable trace metals from suspended particulate matter (SPM). From December 2019 to January 2020, post-monsoon samples were collected from the upstream of the three rivers and the G-B-M Estuary. Dissolved trace elements in the Ganges and Meghna Rivers exhibited remarkable spatial variations, whereas those in the Brahmaputra River and the G-B-M Estuary were uniform. The dissolved trace elements, basic information (river length and drainage area), and physicochemical parameters (pH, dissolved oxygen, and conductivity) of the three rivers were inconsistent. The sample sites near urban areas and industrial centers had high concentrations of dissolved trace elements. In the G-B-M Estuary, iron and lead concentrations decreased along the salinity gradient, whereas selenium levels gradually increased, which may have been released by the SPM owing to its highly exchangeable trace metals. Compared with historical concentrations, trace elements that entered the G-B Estuary from the Ganges and Brahmaputra Rivers exhibited either decreased or increased metal fluxes due to additional terrigenous sources, suggesting that the inputs of trace element flux from the Ganges and Brahmaputra Rivers into the oceans may need to be re-evaluated. Furthermore, Fe and Pb concentrations and river fluxes in the Ganges and Changjiang have decreased in recent years. Hence, the fluxes of certain trace elements that enter the oceans from large rivers may require re-evaluation.
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Affiliation(s)
- Han Su
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China.
| | - Md Jaker Hossain
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China; Institute of Marine Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Sheikh Aftab Uddin
- Institute of Marine Sciences, University of Chittagong, Chittagong, 4331, Bangladesh
| | - Shan Jiang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China
| | - Yan Chang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China
| | - Shuo Jiang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China
| | - Xin Shi
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China
| | - Zheng Bo Liu
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China
| | - Lijun He
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China
| | - Jing Zhang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200241, Shanghai, China; School of Oceanography, Shanghai Jiao Tong University, 200240, Shanghai, China
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Kumar S, Saxena A, Srivastava RK, Singh SB, Ram RN, Ganie PA, Posti R, Pandey N. Composition of heavy metals in sediment, water, and fish of the Ganga and Yamuna Rivers in two major cities of India. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:612. [PMID: 38869675 DOI: 10.1007/s10661-024-12777-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 06/06/2024] [Indexed: 06/14/2024]
Abstract
The rapid industrial development in the Indian capital region has led to significant waste generation, which, despite undergoing treatment prior to disposal, contributes substantially to water body contamination. Given the diverse nature of these wastes and their potential repercussions across the food chain, a study was conducted to evaluate heavy metal contamination levels in the Ganga and Yamuna Rivers of two major cities. Six heavy metals (Pb, Cd, Hg, Cu, Cr, and Zn) were analyzed in fish, water, and sediment samples by utilizing flame atomic absorption spectrophotometry (Avanta Σ) from March 2019 to February 2020. Results revealed distinct heavy metal distribution patterns, with Cr > Zn > Pb > Cu > Cd > Hg in the Ganga River and Zn > Cr > Pb > Cu > Cd > Hg in the Yamuna River for fish samples. Additionally, levels of Hg in Cyprinus carpio and Sperata oar from the Ganga River, and Pb, Cd, Hg, and Cr in Salmophasia bacaila and Mystus cavasius from the Yamuna River exceeded WHO/FAO permissible limits. In water samples, the predominant heavy metal sequences were Pb > Cu > Zn > Cr > Cd > Hg for the Ganga River and Cr > Zn > Pb > Cu > Cd > Hg for the Yamuna River, with Pb, Cr, Zn, and Cd surpassing WHO standards. Sediment analysis revealed varying heavy metal compositions, with Zn > Cr > Pb > Cu > Cd > Hg in the Ganga River and Cr > Zn > Pb > Cu > Cd > Hg in the Yamuna River. While drinking water and fish from the Ganga River were deemed safe for consumption, those from the Yamuna River were not. Given the toxic nature of heavy metals and their detrimental health impacts, regular monitoring and effective management strategies are imperative.
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Affiliation(s)
- Sumit Kumar
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Uttarakhand, India.
| | - Amita Saxena
- Department of Fisheries Resource Management, College of Fisheries, G.B.Pant, University of Agriculture and Technology, Udham Singh Nagar, Pantnagar, Uttarakhand, India
| | - Rajeev Kumar Srivastava
- Department of Environmental Sciences, College of Basic Science and Humanities, G.B.Pant, University of Agriculture and Technology, Udham Singh Nagar, Pantnagar, Uttarakhand, India
| | - Suraj Bhan Singh
- Department of Mathematics, Statistics and Computer Sciences, College of Basic Science and Humanities, G.B.Pant, University of Agriculture and Technology, Udham Singh Nagar, Pantnagar, Uttarakhand, India
| | - Raj Narayan Ram
- Department of Mathematics, Statistics and Computer Sciences, College of Basic Science and Humanities, G.B.Pant, University of Agriculture and Technology, Udham Singh Nagar, Pantnagar, Uttarakhand, India
| | - Parvaiz Ahmad Ganie
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Uttarakhand, India
| | - Ravindra Posti
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Uttarakhand, India
| | - Nityanand Pandey
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, Uttarakhand, India
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Yadav SK, Attry B, Shukla S, Dutta S, Sharma K, Rajak R, Gupta A, Baruah B, Ranjan RK. Distribution, toxicity load and risk assessment of heavy metals in the groundwater of Dhemaji, Assam, India. CHEMOSPHERE 2024; 358:141979. [PMID: 38685324 DOI: 10.1016/j.chemosphere.2024.141979] [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: 05/19/2023] [Revised: 03/06/2024] [Accepted: 04/09/2024] [Indexed: 05/02/2024]
Abstract
Metal contamination in drinking water has drawn attention since it gravely jeopardizes human health. This study was conducted in pre- and post-monsoon season in 2021 at Dhemaji, Assam, India. It characterized metal pollutants in groundwater, their distribution, possible sources, and evaluated the potential toxicity and associated health risk assessment. The seasonal mean concentration of Fe in both seasons is observed highest followed by Mn, Zn, Cu, As, and Ni. Furthermore, the metal concentrations during pre-monsoon are comparatively higher. The geogenic processes and agricultural practices are the major sources of groundwater metal contamination as evident from the statistical analysis. The different pollution indices viz. Heavy-metal Pollution Index (HPI), Heavy-metal Evaluation Index (HEI) and Degree of Contamination (Cd) suggested that groundwater is not suitable for drinking uses. The Heavy Metal Toxicity Load (HMTL) suggesting As, Co, Mn and Hg should be removed from the groundwater to ensure safety. Water pollution indices (WPI) suggest that Fe, Mn, As and Ni are the main pollution-causing metals in the study area which may be restored under the BIS and WHO limit by diluting the water. The human health risk has been calculated by carcinogenic and non-carcinogenic risk assessment. The non-carcinogenic risk for adults and children is within the threshold limit. The carcinogenic risk shows that continuous exposure of As and Ni may give rise to cancer among adults and children in the region. Therefore, comprehensive groundwater quality monitoring with well-planned treatment should be needed to provide safe and clean drinking water in the studied area.
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Affiliation(s)
| | - Binud Attry
- Department of Geology, Sikkim University, Sikkim, 737102, India
| | - Sudeep Shukla
- Environment Pollution Analysis Lab, Bhiwadi, Haryana, 127021, India
| | - Shruti Dutta
- Department of Geology, Sikkim University, Sikkim, 737102, India
| | - Khushboo Sharma
- Department of Geology, Sikkim University, Sikkim, 737102, India
| | - Rajeev Rajak
- Department of Geology, Sikkim University, Sikkim, 737102, India
| | - Aparna Gupta
- Department of Geology, Sikkim University, Sikkim, 737102, India
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Niloy NM, Habib SA, Islam MI, Haque MM, Shammi M, Tareq SM. Distribution, characteristics and fate of fluorescent dissolved organic matter (FDOM) in the Bay of Bengal. MARINE POLLUTION BULLETIN 2023; 195:115467. [PMID: 37659388 DOI: 10.1016/j.marpolbul.2023.115467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 07/11/2023] [Accepted: 08/27/2023] [Indexed: 09/04/2023]
Abstract
The Bay of Bengal (BoB) is the largest sink to retain discharges from major rivers and the Sundarbans Mangrove Forest in Bangladesh and upholds significant ecological and resource diversity. This study aims to characterize, and identify sources, spatial dynamics, and the fate of the principal ecological web driver that is fluorescent dissolved organic matter (FDOM) in the BoB using advanced techniques of excitation-emission matrix (EEM) fluorescence spectroscopy and multivariate parallel factor (PARAFAC) analyses. The identified four protein-, two humic- and one detergent-like FDOM components mostly showed higher abundance in the shallow water than deep unlike a protein-like component. Such exceptional protein-like component was identified to form colloidal structure under elevated salinity in deep water. Autochthonous humic-like FDOM originated from primary production and water temperature counteracted microbial polymerization in shallow and deep water, respectively. The annual mass deposition indicated the influx of anthropogenic pollutants from both terrestrial and internal marine systems.
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Affiliation(s)
- Nahin Mostofa Niloy
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh; Centre for Coastal Biogeochemistry, School of Environment, Science and Engineering, Southern Cross University, Lismore, New South Wales, Australia
| | - Sm Ahsan Habib
- Bangladesh Space Research and Remote Sensing Organization (SPARRSO), Bangladesh
| | | | - Md Morshedul Haque
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh; Department of Environmental Science and Engineering, Bangladesh University of Textiles, Tejgaon, Dhaka 1208, Bangladesh
| | - Mashura Shammi
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Shafi M Tareq
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka 1342, Bangladesh.
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Biswas R, Paul D, Maity S, Sarkar A. Microbial community composition analysis to decipher the possible role of inherent bacteria for in-situ arsenic (As) bioremediation. 3 Biotech 2023; 13:214. [PMID: 37251727 PMCID: PMC10219919 DOI: 10.1007/s13205-023-03612-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 05/06/2023] [Indexed: 05/31/2023] Open
Abstract
Biogeochemical reduction and mobilization of sediment-bound arsenic (As) is the major concern for widespread groundwater As contamination in the middle Gangetic plains. The present work examines a microcosm based bio-stimulation study and substrate amendments over 45 days to analyze the bacterial community structure and distribution to indicate the possible in-situ bioremediation strategy in the area. Initially, Bacterial phyla Proteobacteria was predominantly present in all the samples, followed by Actinobacteria, Bacteroidetes, and Firmicutes whereas Cyanobacteria was noted as the minor group. In genus level, Delftia, Acinetobacter, Lysobacter, Bacillus, and Pseudomonas were the major groups of bacteria in the As-rich aquifer system, while Planctomycetes dominated the bio-stimulated samples, followed by a minute portion of Proteobacteria. Alpha diversity and Chaol curve further determined the species richness in the samples with an As tolerant capacity of 152.28 ppb. The presence of γ-Proteobacteria as the dominating member in high As-content water indicated their predominant role in As mobilization, whereas, dominance of α-Proteobacterial members in low As-content water indicated their involvement in As detoxification. The complete change in microbial community structure within the bio-stimulated conditions indicated the extensive role of arsenite-oxidizing microbial communities within different levels of As-contaminated areas in Bihar that will enlighten the significant role of these communities in As-biogeochemical cycle. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03612-0.
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Affiliation(s)
- Rimi Biswas
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008 India
| | - Dhiraj Paul
- National Centre for Microbial Resources, Pune, India
| | - Sourav Maity
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008 India
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha 769008 India
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Wang Y, Rume T, Islam SMDU, Fan W, Wu J, Li X. Water Quality Criteria and Ecological Risk Assessment of Typical Transition Metals in South Asia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16125. [PMID: 36498198 PMCID: PMC9739192 DOI: 10.3390/ijerph192316125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Transition metal pollution in rivers in South Asia is more serious than in other regions because of the lack of adequate freshwater management measures. Water quality criteria (WQC) for South Asia is urgently needed to protect regional aquatic environments because of the occurrence of transboundary rivers. The present study established non-parametric kernel density estimation species sensitivity distribution (NPKDE-SSD) models and then derived the acceptable hazardous concentration for protection of 95% of all aquatic species (HC5) and WQC of six typical transition metals in South Asia. The results showed that the order of acute and chronic WQC was Mn > Fe > Cd > Zn > Cu > Hg and Cu > Fe > Cd, respectively. A risk assessment of these metals in the Indus River, the Ganges River, the Brahmaputra River, the Meghna River, and the Bagmati River was also carried out. Based on the results, these major rivers in South Asia were highly polluted with transition metals, with significant ecological risks for a large number of aquatic species. This study can contribute to a better understanding of ecological risks in South Asia and provide a scientific basis for the updating of water quality standards and the increase in overall water quality.
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Affiliation(s)
- Ying Wang
- School of Space and Environment, Beihang University, Beijing 100191, China
| | - Tanjena Rume
- School of Space and Environment, Beihang University, Beijing 100191, China
| | - S. M. Didar-Ul Islam
- School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
| | - Wenhong Fan
- School of Space and Environment, Beihang University, Beijing 100191, China
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing 100191, China
| | - Jiangyue Wu
- National Marine Hazard Mitigation Service, Ministry of Natural Resource of the People’s Republic of China, Beijing 100194, China
| | - Xiaomin Li
- School of Space and Environment, Beihang University, Beijing 100191, China
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Das A, Kumar M, Jha PK, Kumari R, Panday DP, Hdeib R, Mahlknecht J, Deshpande RD. Isotopic and hydrogeochemical tracking of dissolved nutrient dynamics in the Brahmaputra River System: A source delineation perspective. CHEMOSPHERE 2022; 307:135757. [PMID: 35863407 DOI: 10.1016/j.chemosphere.2022.135757] [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: 04/21/2022] [Revised: 07/04/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
The Brahmaputra river system (BRS) produces the largest discharge in India, supplying water to more than 62 million inhabitants. The present study aims to quantify the environmental elements that affect the spatio-temporal variation of nutrients in the Brahmaputra river system (BRS). The association of physico-chemical characteristics of floodplain sediments with the distribution pattern of P during wet and dry periods in different depths were also studied. The seasonal variation suggest that the average dissolved inorganic nitrogen and dissolve inorganic phosphorus are found higher in monsoon while the average dissolve silica were higher in post-monsoon. The spatial variation of dissolve inorganic phosphate and nitrate concentration suggests both the nutrient are higher in upstream sites. The DiS concentrations tended to be higher in downstream. In 70% of the sampled tributaries, the average molar ratio for dissolved inorganic nitrogen/dissolved inorganic phosphorous (DIN/DIP) was greater than 16:1, which indicates phosphate limited biological productivity. In contrast, an average molar ratio of dissolved inorganic silica/DIN (DSi/DIN) of 3.8 ± 3.0 favoured diatom growth in those tributaries where DSi/DIN molar ratio was lower than 1, indicating eutrophication. The BRS transported 24.7, 5.93, and 312 × 104 tons/year-1 of DIN, PO4-P and SiO2-Si, respectively. The depth-wise variation of P-fraction during monsoon suggests that the authigenic phosphorus was most abundant followed by Fe-bound, exchangeable, detrital and organic. In the post-monsoon, Fe-bound P was found at a higher concentration followed by authigenic phosphorus. High nutrient concentrations with more δ18O depleted water implied precipitation being the major source of nutrients in the BRS.
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Affiliation(s)
- Aparna Das
- Department of Environmental Science, Tezpur University, Napaam, 784028, Assam, India
| | - Manish Kumar
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Bidholi Campus, Energy Acres, Dehradun, 248007, Uttarakhand, India.
| | - Pawan Kumar Jha
- Centre of Environmental Studies, University of Allahabad, Prayagraj, 211002, Uttar Pradesh, India
| | - Rina Kumari
- School of Environment and Sustainable Development, Central University of Gujarat, Gujarat, 382030, India
| | - Durga Prasad Panday
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Bidholi Campus, Energy Acres, Dehradun, 248007, Uttarakhand, India
| | - Rouya Hdeib
- College of Engineering, Applied Science University (ASU), Kingdom of Behrain
| | - Jürgen Mahlknecht
- Escuela de Ingenieria y Ciencias, Tecnologico de Monterrey, Campus Monterrey, Eugenio Garza Sada 2501 Sur, Monterrey, 64849, Mexico
| | - R D Deshpande
- Physical Research Laboratory, Geosciences Division, 380059, Ahmedabad, India
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Ravula R, Bhabak KP, Mandal TK. User‐friendly point of care test device for detection of arsenic in potable water: Prototype, design, and artifact. ASIA-PAC J CHEM ENG 2022. [DOI: 10.1002/apj.2815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rajasekhar Ravula
- Centre for the Environment Indian Institute of Technology Guwahati Guwahati India
| | - Krishna Pada Bhabak
- Centre for the Environment Indian Institute of Technology Guwahati Guwahati India
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati India
| | - Tapas K. Mandal
- Centre for the Environment Indian Institute of Technology Guwahati Guwahati India
- Department of Chemical Engineering Indian Institute of Technology Guwahati Guwahati India
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Li W, Zhang W, Shan B, Sun B, Guo X, Li Z. Risk assessment of heavy metals in suspended particulate matter in a typical urban river. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:46649-46664. [PMID: 35171423 DOI: 10.1007/s11356-022-18966-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Suspended particulate matter (SPM) is a major source of contamination in urban rivers as it serves as a carrier for pollutants, such as heavy metals. In this study, the Beiyun River, northern China, was used as a case study to determine the characteristics of SPM-associated heavy metal spatial distribution, to evaluate the potential ecological risks and identify heavy metal sources. The concentrations of seven heavy metals and other associated indicators (TC, TN, TP, and OM) were measured at 12 sites and analyzed by Pearson correlation (PC) and principal component analyses (PCA). The average concentrations of Cr, Ni, Cu, Zn, As, Cd, and Pb were 70.72, 27.88, 31.35, 115.70, 27.77, 0.23, and 29.62 mg/kg, respectively, with significant spatial differences occurring between some elements. Igeo values established the ranked order of heavy metal pollutant concentrations in SPM as As > Cd > Zn > Cu > Pb > Cr > Ni. [Formula: see text] analysis demonstrated that the ranked order of potential ecological risk from the seven metals was Cd > As > Cu > Pb > Ni > Cr > Zn. Potential ecological risk index (RI) results confirmed the high potential ecological risk in the study area. Among the measured heavy metals, Cd represented the highest pollution risk, as shown by its highest [Formula: see text] value. Correlation analysis (CA) showed that Zn had a strong correlation with Cu and Pb. Significant positive correlations were found between TC, TN, TP, and Cu. Three element pairs, Zn-Cd, Cr-Cu, and Cr-Ni, were also found to have strong correlations. Zn, Cu, and Ni were mainly introduced by human activities including urban industrial sewage discharge (such as metallurgy and electroplating industrial wastewater), agricultural drainage, and landfill wastewater, while Cr mainly originated from natural processes like mineral weathering and atmospheric precipitation. This information on the concentration, risk, and sources of SPM in Beiyun River provides an important reference for the reduction of heavy metal pollution in SPM in a typical river in the Haihe River Basin (China).
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Affiliation(s)
- Wenye Li
- School of Water and Soil Conservation, Beijing Forestry University, Beijing, 100038, China
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Wenqiang Zhang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| | - Baoqing Shan
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Baoping Sun
- School of Water and Soil Conservation, Beijing Forestry University, Beijing, 100038, China
| | - Xiaoping Guo
- School of Water and Soil Conservation, Beijing Forestry University, Beijing, 100038, China
| | - Zhenhan Li
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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Niloy NM, Haque MM, Tareq SM. Temporal changes in hydrochemistry and DOM characteristics of the Brahmaputra River: implication to the seasonality of water quality. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:35165-35178. [PMID: 35044604 DOI: 10.1007/s11356-022-18618-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 01/07/2022] [Indexed: 06/14/2023]
Abstract
Fluorescent dissolved organic matter (fDOM) in the Brahmaputra River water was characterized using excitation-emission matrix fluorescence spectroscopy (EEM) and parallel factor analysis (PARAFAC) model. EEM and PARAFAC model identified five fluorophores (Peak A, C, M, T, Tuv) and four fDOM components (two humic-, tryptophan-, and tyrosine-like) in the Brahmaputra River water. DOC varied between 0.8 and 3.9 mg/L and along with the intensities of the fDOM components showed higher concentration in the pre-monsoon and monsoon than post-monsoon. Higher biological oxygen demand (BOD) and chemical oxygen demand (COD) confirmed the presence of a high amount of organic pollutants in the Brahmaputra River of Bangladesh. Cations and anions concentrations were comparatively lower in the monsoon and pre-monsoon compared to post-monsoon. Mg2+, Na+, and HCO3- ions were predominant; catchments were carbonate mineral-dominated; and the abundance of Na+ and SO42- ions described the presence of uncommon dissolution in the Brahmaputra River. Optical indices described that fDOM components were less aromatic, had low molecular size and weight, terrestrial and biological derived, and were largely affected by microbial decomposition. The Brahmaputra River water was in the higher microbial risk at the pre-monsoon and monsoon than the post-monsoon of the year. Entropy and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) methods based water quality index (WQI) was developed using PARAFAC components matrix of DOM. Newly derived WQI showed high seasonal variability of water quality in the Brahmaputra River due to the changes in local hydro-climate.
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Affiliation(s)
- Nahin Mostofa Niloy
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, Bangladesh.
| | - Md Morshedul Haque
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, Bangladesh
- Department of Environmental Protection Technology, German University Bangladesh, Gazipur, 1702, Bangladesh
| | - Shafi M Tareq
- Hydrobiogeochemistry and Pollution Control Laboratory, Department of Environmental Sciences, Jahangirnagar University, Dhaka, 1342, Bangladesh.
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12
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Kumar M, Kuroda K, Barcelo D, Furumai H. Monsoon dilutes the concurrence but increases the correlation of viruses and Pharmaceuticals and Personal Care Products (PPCPs) in the urban waters of Guwahati, India: The context of pandemic viruses. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 813:152282. [PMID: 34902398 DOI: 10.1016/j.scitotenv.2021.152282] [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: 08/11/2021] [Revised: 11/18/2021] [Accepted: 12/05/2021] [Indexed: 06/14/2023]
Abstract
Concurrence of pharmaceuticals and personal care products (PPCPs), pathogenic viruses, metals and microbial pollution along with their seasonal variations in the water environment are overarching in the context of existing pandemic, especially for tropical countries. The present study focuses on the seasonal influence on the vulnerability of urban water in Guwahati, the largest city in North-eastern India, through examining the concurrence of seven PPCPs, five viruses, faecal bacteria and nine metals in surface waters during monsoon (Summer-July 2017) and pre-monsoon (Winter-March 2018). Surface water sampling was carried out at different locations of the Brahmaputra River, its tributary Bharalu River (an unlined urban drain), and Dipor Bill Lake (Ramsar-recognized wetland). Both PPCPs and viruses were at high concentrations (e.g. up to 970 ng L-1 caffeine, 2.5 × 103 copies mL-1 pepper mild mottle virus (PMMoV)) at the confluence points of urban drains and the river, while they were mostly undetectable at both upstream and downstream locations, implying strong self-purification ability of the river. All the analysed PPCPs and viruses were at much higher concentrations during pre-monsoon i.e., winter than during monsoon, implying heavy dilution and temperature effect during the monsoon. Overall, PPCPs and viruses were more correlated in monsoon but the risk quotient in the urban tributary was higher in pre-monsoon (e.g. 5061 in pre-monsoon and 1515 in monsoon for caffeine). PMMoV was found to be an excellent faecal pollution indicator due to its prevalence, detectability and specificity in all seasons. Overall, the seasonal fluctuations of the non-enveloped viruses monitored in this study is likely to be relevant for SARS-CoV-2. We contribute to address the literature scarcity pertaining to seasonal variations in the prevalence of viruses and their concurrences with contaminants of emerging concern.
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Affiliation(s)
- Manish Kumar
- Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand 248007, India.
| | - Keisuke Kuroda
- Department of Environmental and Civil Engineering, Toyama Prefectural University, Imizu 939-0398, Japan
| | - Damia Barcelo
- Catalan Institute for Water Research (OCRA-CERCA), Carrer Emili Grahit 101, 17003 Girona, Spain; Universitat de Girona, Girona, Spain; Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Hiroaki Furumai
- Research Center for Water Environment Technology, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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13
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Meng F, Ma G, Qiu J, Fu Z, Yan J, Wang L. Facile synthesis of Cu N-lauroyl sarcosinate nanozymes with laccase-mimicking activity and identification of toxicity effects for C. elegans. RSC Adv 2022; 12:32898-32902. [DOI: 10.1039/d2ra03759a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 11/08/2022] [Indexed: 11/17/2022] Open
Abstract
Toxicity assessment of Caenorhabditis elegans Cu-Ls Nz with laccase-like activity.
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Affiliation(s)
- Fanwei Meng
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, Jilin University, Changchun 130012, China
- Hospital of Stomatology, Jilin Universtiy, Changchun 130012, PR China
- School of Life Sciences, Jilin University, Changchun 130012, China
| | - Guofang Ma
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, Jilin University, Changchun 130012, China
| | - Jiahe Qiu
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, Jilin University, Changchun 130012, China
| | - Zhendong Fu
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, Jilin University, Changchun 130012, China
| | - Jiaqing Yan
- Hospital of Stomatology, Jilin Universtiy, Changchun 130012, PR China
| | - Lingping Wang
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, Jilin University, Changchun 130012, China
- School of Life Sciences, Jilin University, Changchun 130012, China
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Ding F, Liu Y, Zhang L, Ji C, Wu D, Wang L, Liu H. The effect of rainfall runoff on phase partition of palladium in receiving water bodies and the underlying influential mechanism. CHEMOSPHERE 2022; 287:132109. [PMID: 34492414 DOI: 10.1016/j.chemosphere.2021.132109] [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: 10/05/2020] [Revised: 12/13/2020] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
The influx of rainfall runoff intensifies phase partition of the pollutant in receiving water bodies, and the phase partition plays an important role in the speciation transformation and spatial partition of pollutants. In this study, the Meishe River on Hainan Island, China, was adopted as the research area, and palladium (Pd) was selected as the target pollutant. The purpose of this study was to explore phase partition of Pd in receiving water bodies and the underlying influential mechanism. The partition coefficients (Kds) of Pd between water and suspended particulate matter in receiving water bodies and rainfall runoff were 0.74 (0.1 × 10-2 - 8.75) and 2.74 (0.5 × 10-2 - 15.70), respectively. These results indicated that Pd dominated the dissolved phase in the receiving water bodies and that Pd dominated the particulate phase in rainfall runoff. Variations in the Kd value of Pd in the receiving water bodies were relatively smooth over time during the precipitation events in May and June. There were no significant differences in phase partition of Pd between the receiving water bodies and rainfall runoff. The Kd value for Pd in the receiving water bodies showed a fluctuating upward trend over time during the precipitation events in August, and the difference in Kd values of Pd between the receiving water bodies and the rainfall runoff were large. Variations in the Kd value of Pd among sections of the receiving water bodies could be roughly divided into two categories, namely, U and inverted-U types. After rainfall runoff converged for 20-25 min, the Pd phase transitions were more frequent within 7 m downstream of the outfall. The Kd value of Pd in the receiving water bodies was correlated with pH, Eh, and total suspended solid (TSS), and the correlation coefficients were 0.52, -0.57, and 0.84, respectively (p < 0.05). Compared with rainfall runoff, pH, Eh, TSS had less influence on phase partition of Pd in receiving water bodies. This might be attributed to the dilution effect of natural water and the unique dynamic mechanism of rivers.
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Affiliation(s)
- Fangfang Ding
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China; Key Laboratory of Earth Surface Processes and Environmental Change of Tropical Islands, Hainan Province, China
| | - Yuyan Liu
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China; Key Laboratory of Earth Surface Processes and Environmental Change of Tropical Islands, Hainan Province, China.
| | - Lan Zhang
- Analysis and Testing Center, Capital Normal University, Beijing, 100048, China
| | - Caiye Ji
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China; Key Laboratory of Earth Surface Processes and Environmental Change of Tropical Islands, Hainan Province, China
| | - Dan Wu
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China; Key Laboratory of Earth Surface Processes and Environmental Change of Tropical Islands, Hainan Province, China
| | - Lin Wang
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China; Key Laboratory of Earth Surface Processes and Environmental Change of Tropical Islands, Hainan Province, China
| | - Haofeng Liu
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China; Key Laboratory of Earth Surface Processes and Environmental Change of Tropical Islands, Hainan Province, China
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Singh A, Gogoi A, Saikia P, Karunanidhi D, Kumar M. Integrated use of inverse and biotic ligand modelling for lake water quality resilience estimation: A case of Ramsar wetland, (Deepor Beel), Assam, India. ENVIRONMENTAL RESEARCH 2021; 200:111397. [PMID: 34111439 DOI: 10.1016/j.envres.2021.111397] [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: 01/05/2021] [Revised: 05/20/2021] [Accepted: 05/22/2021] [Indexed: 06/12/2023]
Abstract
The present study evaluates the vulnerability of the lake system (Deepor Beel) due to the combined exposure of toxic metals, major ions and mineral dissociation. The hydro-chemistry of the Deepor Beel lake reveals the dominance of carbonate weathering with strong evidences of ion-exchange reaction occurring throughout the monsoon season of 2014 and 2015. Through an integrated application of multivariate analysis, the occurrence of albite weathering was confirmed, although as an isolated incidence only, along-with substantial evidence of waste water intrusion from fertilizer industries. The moderate cation exchange capacity (CEC) of the soil, indicates the presence of illite, chlorite and kaolinite which provides a strong buffering action in terms of phosphorous and nutrient retention. However, occurrences of chemical waste in the form of bleaching powder (Ca(OCl)2) are causing acidification of lake soil, which will trigger the release of phosphorous and may enhance the eutrophication level in near future. Through the simulations of Biotic Ligand (BL) model on ceriodaphnia dubia, it is being revealed, that the free availability of Ca2+ in the lake water, provides a higher adsorptive competition for labile metal species especially for Cu and Zn. Additionally, the risk among children from drinking lake water, has increased by three to seven times in a duration of just one year. The present study is a pioneering work, which has evaluated the vulnerability of Deepor Beel lake by adopting a sequential assessment strategy of lake internal as well as external ecology. Our proposed methodology can be a used as a scientific basis for future assessment of the lake health.
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Affiliation(s)
- Ashwin Singh
- Discipline of Civil Engineering, Indian Institute of Technology, Gandhinagar, India
| | - Anandita Gogoi
- Department of Environmental Sciences, Tezpur University, Napaam, India
| | - Parijat Saikia
- Institute of Advanced Study in Science and Technology, Guwahati, India
| | - D Karunanidhi
- Department of Civil Engineering, Sri Shakthi Institute of Engineering and Technology (Autonomous), Coimbatore, 641062, India
| | - Manish Kumar
- Discipline of Earth Sciences, Indian Institute of Technology, Gandhinagar, 382355, India.
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16
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Fan J, Jian X, Shang F, Zhang W, Zhang S, Fu H. Underestimated heavy metal pollution of the Minjiang River, SE China: Evidence from spatial and seasonal monitoring of suspended-load sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 760:142586. [PMID: 33071115 DOI: 10.1016/j.scitotenv.2020.142586] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Previous assessments on rivers in SE China with highly developed economy and enormous population indicate diverse and relatively low particulate heavy metal pollution levels. However, the controlling mechanisms for heavy metal enrichment and transport remain enigmatic. Here, we target a mesoscale mountainous river, the Minjiang River, and obtain grain size, mineralogical and heavy metal concentration (Pb, Cd, Cr, Mn, Mo, Zn, V, Co, Ni, Cu) data from seasonal suspended particulate matter (SPM) near the river mouth, riverbed sediments and SPM samples from mainstream and major tributaries of the river. The results indicate that SPM samples have higher particulate heavy metal concentrations than riverbed sediments collected in pairs. Heavy metal concentrations of Cd, Zn, Cr, V, Co, Ni and Cu are higher in upstream SPM samples than those in downstream regions, whereas Pb, Mn and Mo concentrations don't show this spatial variation. Most heavy metals (e.g., Pb and Zn) show high concentrations in flood seasons and relatively low concentrations in dry seasons, revealing a hydrologic control. However, Cr and Mn show high concentrations in some dry season samples, suggesting incidental anthropogenic input events. The SPM-based pollution assessments using enrichment factor, geoaccumulation index and potential ecological risk index demonstrate that the Minjiang River is moderately to strongly polluted by particulate Pb, Cd, Mo and Zn contaminations and most particulate heavy metals have moderate to considerable potential ecological risks. We contend that transport and discharge of particulate heavy metals by the Minjiang River are controlled by both natural and anthropogenic forcings and the pollution levels are worse than previously known. Our findings suggest that particulate heavy metal discharge by subtropical mountainous rivers is related to sediment types and hydrologic characteristics. Therefore, high-spatiotemporal-resolution investigations on river SPM samples are highly recommended to better evaluate particulate heavy metal pollution levels and aquatic environmental conditions.
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Affiliation(s)
- Jiayu Fan
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Xing Jian
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China.
| | - Fei Shang
- Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, Beijing 100083, PR China
| | - Wei Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Shuo Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Hanjing Fu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
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17
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Uddin MJ, Jeong YK. Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management. Heliyon 2021; 7:e06107. [PMID: 33659727 PMCID: PMC7892934 DOI: 10.1016/j.heliyon.2021.e06107] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/14/2020] [Accepted: 01/22/2021] [Indexed: 12/14/2022] Open
Abstract
River water is very much important for domestic, agriculture and industrial use in Bangladesh which is in critical condition from long time based on research data. During last 40 years, extreme pollution events occurred in peripheral rivers surrounding Dhaka city and Karnaphuli River in Chittagong city. Present data showed that other urban rivers are also in critical condition especially Korotoa, Teesta, Rupsha, Pashur and Padma. The pollutants flowing with water made a severe pollution in downstream areas of rivers. Metals concentrations in river water was found to be higher in dry season. Dissolve oxygen (DO) was nearly zero in Buriganga River and several points in Turag, Balu, Sitalakhya and Karnaphuli River. NO3-, NO2- and PO43- pollution occurred in different rivers. Zn, Cu, Fe, Pb, Cd, Ni, Mn, As and Cr concentration was above drinking water standard in most of the river and some metals was even above irrigation standard in water from several rivers. Sediment data showed very much higher metal concentrations in most of the rivers especially peripheral rivers in Dhaka and Karnaphuli, Korotoa, Teesta, Rupsha and Meghna River. Metal concentrations in sediment was above US EPA threshold value in most of the rivers. Metal concentrations in fish and agricultural crops showed that bioaccumulations of metals had occurred. The concentration of metals showed the trend like: water<fish<sediment. Agricultural crops were found to contain toxic metals through polluted water irrigation. The calculated data of daily intake for the non-carcinogenic and carcinogenic showed that consumption of the contaminated foodstuff can cause serious health injuries.
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Affiliation(s)
- Md. Jamal Uddin
- Department of Soil and Environmental Sciences, University of Barisal, Bangladesh
- Corresponding author.
| | - Yeon-Koo Jeong
- Solid and Hazardous Waste Management Laboratory, Department of Environmental Engineering, Kumoh National Institute of Technology, South Korea
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18
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Pandey D, Singh A, Ramanathan A, Kumar M. The combined exposure of microplastics and toxic contaminants in the floodplains of north India: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111557. [PMID: 33223351 DOI: 10.1016/j.jenvman.2020.111557] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/14/2020] [Accepted: 10/04/2020] [Indexed: 05/18/2023]
Abstract
Microplastics in aquatic ecosystem are an emerging environmental threat, primarily aggregating into sediments and living biota besides providing active transportation to toxic pollutants. Recent studies have revealed that a microplastic surface cannot be considered as "inert" and therefore the rate and stage of degradation of microplastic will determine its capability in adsorbing and transporting the solute to longer distances. Our concern is driven by the fact that there has been an absence of widescale research in India despite a country with one of the longest networks of rivers and a 7500 km long active coastline. Anthropogenic pollutants are expected to increase and the situation will further worsen when more persistent organic pollutants (POCs) and geogenic contaminants will find its sink via monsoon runoff. Studies on aquatic species including COD, daphnia magna and zebrafish suggest strong links of bio-accumulation, suspecting to a more serious situation for the coastal India where there is an almost three times increase in the density of the microplastics as the monsoon progresses. Evidences also suggests that microplastics can adsorb known carcinogens as well as endocrine disrupting chemicals leaving our aquatic life exposed to higher mortality. Our review is a first ever scientific attempt in compiling these evidences through researches done in this field to understand the risk that the major floodplains of North India are currently facing. We have adapted the theories and inferences of the available research to predict and postulate a probable mechanism that could explain the severity of the situation in India.
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Affiliation(s)
- Deeptija Pandey
- Discipline of Civil Engineering, Indian Institute of Technology, Gandhinagar, 382355, India
| | - Ashwin Singh
- Discipline of Civil Engineering, Indian Institute of Technology, Gandhinagar, 382355, India
| | - Alagappan Ramanathan
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Manish Kumar
- Discipline of Earth Sciences, Indian Institute of Technology, Gandhinagar, 382355, India.
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Guo X, Wang J. Projecting the sorption capacity of heavy metal ions onto microplastics in global aquatic environments using artificial neural networks. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123709. [PMID: 33254753 DOI: 10.1016/j.jhazmat.2020.123709] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/26/2020] [Accepted: 08/12/2020] [Indexed: 05/22/2023]
Abstract
Microplastics pollution and their interaction with heavy metal ions have gained global concern. It is essential to develop models to predict the sorption capacity of heavy metal ions onto microplastics in global aquatic environments, and to connect the laboratory study results with the field measurement results. In this paper, the artificial neural networks (ANN) models were established based on literature data. for The results showed that the ANN model could predict the sorption capacity of heavy metal ions (including Cd, Pb, Cr, Cu, and Zn) onto microplastics in the global environments with high correlation coefficient (R) values (0.926∼0.994). The predicted sorption capacity was influenced by the initial concentration of heavy metal ions and the salinity in surrounding water. The predicted sorption capacity in rivers and lakes was higher than that in the ocean. Aged microplastics had higher affinity to heavy metal ions than virgin microplastics. The predicted sorption capacity of Cd, Pb, and Zn ions onto large microplastics (5 mm) was less than 0.12 μg/g. The predicted amount was in agreement with the field measurement results, suggesting that the laboratory studies can provide useful information for projecting the sorption capacity of heavy metal ions onto microplastics in global aquatic environments.
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Affiliation(s)
- Xuan Guo
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, China; Beijing Key Laboratory of Radioactive Waste Treatment, INET, Tsinghua University, Beijing 100084, China.
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Metal Fractionation in Surface Sediments of the Brahmaputra River and Implications for Their Mobilization. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17249214. [PMID: 33317163 PMCID: PMC7764534 DOI: 10.3390/ijerph17249214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/03/2020] [Accepted: 12/03/2020] [Indexed: 11/23/2022]
Abstract
The Brahmaputra River is the largest tropical river in India that flows along the Himalayan regions and it is the lifeline of millions of people. Metal fractionation in the Brahmaputra River’s surface sediments and its correlation with turbidity are assessed in this study. The interaction between metal fractions and the overlying water is studied using multivariate statistical analyses. The strong positive correlation between NH4 of the overlying water and the exchangeable fractions in sediments signifies that the metals in the exchangeable fractions can be substituted by NH4. Subsequently, these metals can be released into the overlying water. The fluctuation in turbidity from 73 to 875 NTU indicates a large variation in the suspended matter concentration, and a higher concentration of suspended matter could provide attachment sites for pollutants such as metals. Significant variation in turbidity manifests a potentially high risk of pollution. In addition, the observation of local people along the Brahmaputra River turning its color to muddy indicates the need for continuous monitoring of water quality and an assessment of pollution is crucial. Although the Brahmaputra River’s risk assessment code is at low risk, the exchangeable fractions of Ni and Zn are present at all sites. Thus, the Brahmaputra River requires early preventive measures and management strategies to control metal pollution. This study contributes to an understanding of the fluctuation of turbidity of a tropical river. We provide baseline data for policymakers, and the importance of further intensive studies on metal pollution in the Himalayan Rivers is highlighted.
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21
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Reappraisal review on geopolymer: A new era of aluminosilicate binder for metal immobilization. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.enmm.2020.100345] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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22
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Liu Y, Ding F, Ji C, Wu D, Wang L, Fu B, Liu H, Zhang L. Variation in palladium and water quality parameters and their relationship in the urban water environment. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:2450-2458. [PMID: 32784288 DOI: 10.2166/wst.2020.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Palladium (Pd) is widely used in vehicle exhaust catalysts (VECs) to reduce toxic emissions from motor vehicles. The study aimed to quantitatively determine Pd content and water quality parameters, to analyze the variation differences and to explore the effect of water quality parameters on Pd content in the urban water environment system (wet deposition-rainfall runoff-receiving water body-estuary) of the city of Haikou, Hainan Island, China. The method used in this study included microwave digestion under high pressure and temperature, analysis by inductively coupled plasma mass spectrometry, quality control of the experimental procedure and guaranteed recovery (85% -125%). The results showed that the dissolved Pd average content in the urban water environment system was the highest in rainfall runoff (4.93 ng/L), followed by that in the receiving water body (4.56 ng/L), and it was the lowest in wet deposition (0.1 ng/L). The suspended Pd average content was the highest in the estuary (2.83 ng/L), followed by that in rainfall runoff (1.26 ng/L), and it was the lowest in wet deposition (6 × 10-4 ng/L). The particle-water partition ratio of the estuary Pd was the highest (1.26), followed by that of Pd in rainfall runoff (0.26). The particle-water partition ratio of the wet deposition Pd was the lowest (6 × 10-3). The dissolved Pd was correlated with the pH, Cl-, and total suspended solids (TSS) (correlation coefficient = 0.52, -0.68, 0.39, p < 0.05; regression coefficient = 1.27, -1.39, 0.01). The suspended Pd was only correlated with Cl- and TSS (correlation coefficient = -0.36, 0.76, p < 0.05; regression coefficient = -1.45, 0.01). Cl- and TSS were the most closely related to Pd in the water environment system. Although individual factors such as pH, Cl-, and TSS had certain migration and transformation effects on Pd in the wet deposition-rainfall runoff-receiving water body-estuary system, the probability of strong correlations was not high. In particular, Eh was not related to the dissolved nor suspended Pd content (correlation coefficient = 0.14, 0.13), which may be due to the synergistic effect of the multiple physical factors on Pd. This study was helpful to better understand the environmental behavior of Pd and provided important theoretical support for the prevention and protection against urban water environmental pollution.
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Affiliation(s)
- Yuyan Liu
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China
| | - Fangfang Ding
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China
| | - Caiye Ji
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China
| | - Dan Wu
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China
| | - Lin Wang
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China
| | - Bo Fu
- College of Geography and Environmental Science, Hainan Normal University, Haikou, Hainan, 571158, China
| | - Haofeng Liu
- Changji Environmental Monitoring Station, Changji, Xinjiang 831100, China
| | - Lan Zhang
- Analysis and Testing Center, Capital Normal University, Beijing 100048, China E-mail:
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