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Kaya FC, Bouh HAIT, Laissaoui A, Elenga H, Benkdad A, Sebbar M, Dallou GB, Kayath AC. A baseline monitoring of radiological sediment quality and associated risk assessment in coastal ecosystems of the Republic of Congo. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:801. [PMID: 39120831 DOI: 10.1007/s10661-024-12974-8] [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: 02/13/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024]
Abstract
This study presents the first data on levels of natural radioactive elements in sediments from coastal ecosystems of the Republic of Congo. Sediment samples from five coastal sites were collected and analyzed by high-resolution gamma spectrometry for determination of activities of long-lived gamma-emitting radionuclides (234Th, 238U, 226Ra, 210Pb, 228Th, 228Ra, and 40 K). The specific activities were of the same order of magnitude as those measured in sediments of most countries neighboring the Republic of Congo. However, variations in activities were observed from one site to another and also from one sampling point to another within the same site without exceeding the global average reference values. It can be assumed, therefore, that no significant anthropogenic impact is perceptible in the study area. The most commonly used radiological hazard parameters, based mainly on 238U, 232Th, and 40 K activities, were assessed and the ERICA tool was applied to quantify the radiation exposure burden to human and biota resulting from radionuclides in sediments. Besides being useful for future monitoring efforts, the data produced in this work could be important for the worldwide database on radioactivity in the oceans and seas (MARIS) since no data are available in the Congolese marine environment.
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Affiliation(s)
- Freddy Cacharel Kaya
- Marien Ngouabi University, Faculty of Sciences and Technology, B.P 69, Brazzaville, Republic of Congo
- Center for Minerals and Geological Research (CRGM), B.P 14520, Brazzaville, Republic of Congo
| | - Hasna A I T Bouh
- National Centre for Nuclear Energy, Science and Technology (CNESTEN)-Morocco, B.P 1382Agdal, R.P 10001, Rabat, Morocco.
| | - Abdelmourhit Laissaoui
- National Centre for Nuclear Energy, Science and Technology (CNESTEN)-Morocco, B.P 1382Agdal, R.P 10001, Rabat, Morocco
| | - Hilaire Elenga
- Marien Ngouabi University, Faculty of Sciences and Technology, B.P 69, Brazzaville, Republic of Congo
- Center for Minerals and Geological Research (CRGM), B.P 14520, Brazzaville, Republic of Congo
| | - Azzouz Benkdad
- National Centre for Nuclear Energy, Science and Technology (CNESTEN)-Morocco, B.P 1382Agdal, R.P 10001, Rabat, Morocco
| | - Mohammed Sebbar
- National Centre for Nuclear Energy, Science and Technology (CNESTEN)-Morocco, B.P 1382Agdal, R.P 10001, Rabat, Morocco
| | - Guy Blanchard Dallou
- Marien Ngouabi University, Faculty of Sciences and Technology, B.P 69, Brazzaville, Republic of Congo
- Laboratory of Nuclear Physics and Applications (LPNA), National Institute for Research in Exact and Natural Sciences (IRSEN), P.O. Box 2400, Brazzaville, Republic of Congo
| | - Aimé Christian Kayath
- Marien Ngouabi University, Faculty of Sciences and Technology, B.P 69, Brazzaville, Republic of Congo
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Lovrenčić Mikelić I, Oreščanin V, Cukrov N, Tomašić N, Rubčić M, Barišić D. Relationships between radionuclides, metals, and sediment properties in sediment of a bay exposed to anthropogenic pressure and mixed sediment sources (Kaštela Bay, Adriatic Sea, Croatia). MARINE POLLUTION BULLETIN 2023; 197:115731. [PMID: 37939518 DOI: 10.1016/j.marpolbul.2023.115731] [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: 02/21/2023] [Revised: 10/12/2023] [Accepted: 10/26/2023] [Indexed: 11/10/2023]
Abstract
Natural and anthropogenic radionuclides, metals, organic matter, sediment grain size, mineral composition, and sediment sources were studied in marine sediment of Kaštela Bay up to a depth of 0.5 m. Deposition of man-modified material into the sea was evidenced in sediment mineral composition. Presence of pyrite and hematite in this sediment may pose an environmental concern. Metals, radionuclides, and organic matter were grouped in three groups: (i) variables under no anthropogenic influence and preferentially associated with carbonates (Ca, Sr); (ii) variables under no or weak anthropogenic influence and preferentially associated with aluminosilicates (Al, K, Ti, V, Cr, Mn, Fe, Co, Ni, Ga, Rb, Y, 40K, 232Th); (iii) variables under notable anthropogenic influence and/or natural processes of separation (Cu, Zn, Pb, As, 226Ra, 238U, 137Cs, organic matter). Predominant influencing parameters change with sediment depth for some variables. Anthropogenic influence was the most emphasised for Cu, Zn, and Pb, followed by 137Cs.
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Affiliation(s)
- Ivanka Lovrenčić Mikelić
- Laboratory for Low-Level Radioactivities, Division of Experimental Physics, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia.
| | | | - Neven Cukrov
- Laboratory for Physical Chemistry of Traces, Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia.
| | - Nenad Tomašić
- Department of Geology, Faculty of Science, Horvatovac 102a, 10 000 Zagreb, Croatia.
| | - Mirta Rubčić
- Department of Chemistry, Faculty of Science, Horvatovac 102a, 10 000 Zagreb, Croatia.
| | - Delko Barišić
- Laboratory for Radioecology, Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička cesta 54, 10 000 Zagreb, Croatia.
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Yakovlev E, Puchkov A, Malkov A, Bedrina D. Assessment of heavy metals distribution and environmental risk parameters in bottom sediments of the Pechora River estuary (Arctic Ocean Basin). MARINE POLLUTION BULLETIN 2022; 182:113960. [PMID: 35944304 DOI: 10.1016/j.marpolbul.2022.113960] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/10/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
The article is devoted to the study of the content of heavy metals in the bottom sediments of the estuary of the Pechora River, which is the largest river in the European Arctic of Russia. In addition to metals, the particle size distribution and physicochemical parameters of river sediments were analyzed, such as the content of carbonates, organics and ash components. Average concentrations of heavy metals in the sediments of the Pechora Delta sediment have been found to be significantly lower than terrestrial values. The assessment of pollution and toxicity of sediments in the Pechora delta, made using various parameters Igeo, Cf, Cd, EF and ERI, showed a low level of heavy metals in bottom sediments, coupled with a low level of environmental risk. Despite the fact that high concentrations of heavy metals of anthropogenic origin are continuously recorded in the water of the Pechora River, (almost throughout the entire length), there is no accumulation of pollutants in the sediments of the delta. Thus, the estuary of the Pechora River, unlike other large estuary systems, does not act as a filter or sediment trap, which contributes to the penetration of heavy metals deep into the Barents Sea and the widespread distribution of pollutants in the ecosystems of the Arctic.
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Affiliation(s)
- Evgeny Yakovlev
- N. Laverov Federal Centre for Integrated Arctic Research of Russian Academy of Sciences, 109 Severnoj Dviny Emb., Arkhangelsk 163000, Russia.
| | - Andrey Puchkov
- N. Laverov Federal Centre for Integrated Arctic Research of Russian Academy of Sciences, 109 Severnoj Dviny Emb., Arkhangelsk 163000, Russia
| | - Alexey Malkov
- N. Laverov Federal Centre for Integrated Arctic Research of Russian Academy of Sciences, 109 Severnoj Dviny Emb., Arkhangelsk 163000, Russia
| | - Daria Bedrina
- N. Laverov Federal Centre for Integrated Arctic Research of Russian Academy of Sciences, 109 Severnoj Dviny Emb., Arkhangelsk 163000, Russia
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Fakhri Y, Sarafraz M, Pilevar Z, Daraei H, Rahimizadeh A, Kazemi S, Khedher KM, Thai VN, Ba LH, Mousavi Khaneghah A. The concentration and health risk assessment of radionuclides in the muscle of tuna fish: A worldwide systematic review and meta-analysis. CHEMOSPHERE 2022; 289:133149. [PMID: 34871618 DOI: 10.1016/j.chemosphere.2021.133149] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/12/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
Exposure to radionuclides, especially in food, can endanger the health of consumers. In this study, a systematic review and meta-analysis were performed regarding the concentration of radionuclides in tuna fish muscle. International databases including PubMed, Scopus, and Embase were searched to find articles regarding the concentration of radionuclides in tuna fish muscle from 1 January 2000 to 20 February 2021. The lowest and highest concentration of radionuclides was related to Caesium-137 (137Cs) and Potassium-40 (4 K), respectively. The rank order of radionuclides based on their pooled concentration was 4 K (370.157 Bq/kg) > 210Po Polonium-210 (26.312 Bq/kg) > 210Pb (5.339 Bq/kg) > 226Ra (4.005 Bq/kg) > 137Cs (0.415 Bq/kg). The health risk assessment based on annual effective dose indicates that consumers are at the safe range of health risk (H < 1 mSv/y). The continuous monitoring concentration of radionuclides in seafood and health risk assessment should be recommended.
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Affiliation(s)
- Yadolah Fakhri
- Food Health Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Mansour Sarafraz
- Environmental Health Research Center, Department of Environmental Health Engineering, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran
| | - Zahra Pilevar
- School of Health, Arak University of Medical Sciences, Arak, Iran
| | - Hasti Daraei
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran; Department of Environmental Health Engineering, Faculty of Public Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Aziz Rahimizadeh
- Department of Health in Disaster and Emergencies, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Sadegh Kazemi
- Department of Health in Disaster and Emergencies, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Khaled Mohamed Khedher
- Department of Civil Engineering, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia; Department of Civil Engineering, High Institute of Technological Studies, Mrezgua University Campus, Nabeul, 8000, Tunisia
| | - Van Nam Thai
- HUTECH University, 475A, Dien Bien Phu, Ward 25, Binh Thanh District, Ho Chi Minh City, Viet Nam.
| | - Le Huy Ba
- Ho Chi Minh City University of Food Industry (HUFI), 140 Le Trong Tan Street, Tay Thanh Ward, Tan Phu District, Ho Chi Minh City, Viet Nam
| | - Amin Mousavi Khaneghah
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
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Wambua S, Gourlé H, de Villiers EP, Karlsson-Lindsjö O, Wambiji N, Macdonald A, Bongcam-Rudloff E, de Villiers S. Cross-Sectional Variations in Structure and Function of Coral Reef Microbiome With Local Anthropogenic Impacts on the Kenyan Coast of the Indian Ocean. Front Microbiol 2021; 12:673128. [PMID: 34248882 PMCID: PMC8260691 DOI: 10.3389/fmicb.2021.673128] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/31/2021] [Indexed: 11/13/2022] Open
Abstract
Coral reefs face an increased number of environmental threats from anthropomorphic climate change and pollution from agriculture, industries and sewage. Because environmental changes lead to their compositional and functional shifts, coral reef microbial communities can serve as indicators of ecosystem impacts through development of rapid and inexpensive molecular monitoring tools. Little is known about coral reef microbial communities of the Western Indian Ocean (WIO). We compared taxonomic and functional diversity of microbial communities inhabiting near-coral seawater and sediments from Kenyan reefs exposed to varying impacts of human activities. Over 19,000 species (bacterial, viral and archaeal combined) and 4,500 clusters of orthologous groups of proteins (COGs) were annotated. The coral reefs showed variations in the relative abundances of ecologically significant taxa, especially copiotrophic bacteria and coliphages, corresponding to the magnitude of the neighboring human impacts in the respective sites. Furthermore, the near-coral seawater and sediment metagenomes had an overrepresentation of COGs for functions related to adaptation to diverse environments. Malindi and Mombasa marine parks, the coral reef sites closest to densely populated settlements were significantly enriched with genes for functions suggestive of mitigation of environment perturbations including the capacity to reduce intracellular levels of environmental contaminants and repair of DNA damage. Our study is the first metagenomic assessment of WIO coral reef microbial diversity which provides a much-needed baseline for the region, and points to a potential area for future research toward establishing indicators of environmental perturbations.
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Affiliation(s)
- Sammy Wambua
- Pwani University Bioscience Research Centre (PUBReC), Pwani University, Kilifi, Kenya.,Department of Biological Sciences, Pwani University, Kilifi, Kenya
| | - Hadrien Gourlé
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Etienne P de Villiers
- KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya.,Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Oskar Karlsson-Lindsjö
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Nina Wambiji
- Kenya Marine and Fisheries Research Institute, Mombasa, Kenya
| | - Angus Macdonald
- School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Erik Bongcam-Rudloff
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Santie de Villiers
- Pwani University Bioscience Research Centre (PUBReC), Pwani University, Kilifi, Kenya.,Department of Biochemistry and Biotechnology, Pwani University, Kilifi, Kenya
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