Characterization and Ecological Risk Assessment of Microplastics in Sediments of a Tropical West African Lagoon Ecosystem
DOI:
https://doi.org/10.63697/jeshs.2025.10034Keywords:
Microplastics, Sediment contamination, Anthropogenic activity, Fourier Transform Infrared Spectroscopy (FTIR), Ecological risk assessmentAbstract
The accumulation of mismanaged plastics has continued as a significant threat to the health and ecological functions of coastal ecosystems globally. This study examined microplastic (MP) contamination and ecological risks of twenty-four sediment samples from four locations characterized by significant anthropogenic activities along the Lagos Lagoon. Physicochemical properties of sediment were analyzed using standard methods, while morphological classification of microplastics and polymer identification was carried out using a stereomicroscope and Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR) following pretreatment with 30% H₂O₂ and density flotation with ZnCl2. Microplastic abundance ranged from 9.17 ± 6.05 to 12.17 ± 7.55 microplastics/kilogram (MPs/kg), while morphological analysis revealed predominance of fibers (41.4%) and black microplastics (49%). Polyethylene terephthalate (PET) was the most abundant polymer in sediments, suggesting indiscriminate disposal of single-use plastic bottles. One-way ANOVA showed no significant differences among sampling locations for pH (F3, 16 = 1.29, p = 0.31), electrical conductivity (F3, 16 = 1.10, p = 0.37), total organic carbon (F3, 16 = 1.10, p = 0.37), or microplastic abundance (F3, 16 = 0.31, p = 0.82), suggesting relatively uniform sediment conditions. The detection of potentially toxic polymers raises concern over long-term ecological risks. The Polymer Risk Index (PRI) indicates varying ecological risk, with level IV (high) and V (very high) as the predominant categories. This suggests the potential for significant adverse effects to aquatic organisms and ecosystem health. The result emphasizes the urgent need for improved waste management practices, stricter regulation of single-use plastics, sustained monitoring and effective mitigation strategies around the Lagoon’s catchments.
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Abidli, S., Toumi, H., Lahbib, Y., Trigui El Menif, N., 2017. The first evaluation of microplastics in sediments from the complex lagoon-channel of Bizerte (Northern Tunisia). Water, Air and Soil Pollution, 228, 1–10. https://doi.org/10.1007/s11270-017-3439-9
Abiodun, O.A., Osuala, F.I., Otitoloju, A.A., Fotsing, C.M., Ndinteh, D.T., 2019. Micropellet Particles: A Vector of Hydrophobic Endocrine Disrupting Chemicals in Lagos Lagoon. Current Journal of Applied Science and Technology, 36, 1–14. https://doi.org/10.9734/CJAST/2019/v36i630262
Adeogun, A.O., Ibor, O.R., Khan, E.A., Chukwuka, A.V., Omogbemi, E.D., Arukwe, A., 2020. Detection and occurrence of microplastics in the stomach of commercial fish species from a municipal water supply lake in southwestern Nigeria. Environmental Science and Pollution Research, 27, 31035–31045. https://doi.org/10.1007/s11356-020-09031-5
Agbekpornu, P., Kevudo, I., 2023. The risks of microplastic pollution in the aquatic ecosystem. In Advances and Challenges in Microplastics. IntechOpen. https://doi.org/10.5772/intechopen.108717
Anagnosti, L., Varvaresou, A., Pavlou, P., Protopapa, E., Carayanni, V., 2021. Worldwide actions against plastic pollution from microbeads and microplastic in cosmetics focusing on European policies. Has the issue been handled effectively? Marine Pollution Bulletin, 162, 111883. https://doi.org/10.1016/j.marpolbul.2020.111883
Anyaegbu, M.G., Ogugbue, J.C., Ugwoha, E., 2024. Compositional profiles and spatial distribution of microplastics across three selected rivers in Rivers state, Nigeria. Asian Journal of Environment & Ecology, 23, 17–33. https://doi.org/10.9734/AJEE/2024/v23i2525
Badejo, O.T., Olaleye, J.B., Alademomi, A.S., 2014. Tidal characteristics and sounding datum variation in Lagos state. https://ir.unilag.edu.ng/handle/123456789/5360
Bhuyan, M.S., 2022. Effects of microplastics on fish and in human health. Frontiers in Environmental Science, 10, 827289. https://doi.org/10.3389/fenvs.2022.827289
Boerger, C.M., Lattin, G.L., Moore, S.L., Moore, C.J., 2010. Plastic ingestion by planktivorous fishes in the North Pacific Central Gyre. Marine Pollution Bulletin, 60, 2275–2278. https://doi.org/10.1016/j.marpolbul.2010.08.007
Bratovcic, A., 2019. Degradation of micro- and nano-plastics by photocatalytic methods. Journal of Nanoscience and Nanotechnology Applications, 3, 206. http://dx.doi.org/10.18875/2577-7920.3.304
Browne, M.A., Crump, P., Niven, S.J., Teuten, E., Tonkin, A., Galloway, T., Thompson, R., 2011. Accumulation of microplastic on shorelines worldwide: sources and sinks. Environmental Science and Technology, 45, 9175–9179. https://doi.org/10.1021/es201811s
Chae, Y., An, Y.J., 2018. Current research trends on plastic pollution and ecological impacts on the soil ecosystem: A review. Environmental Pollution, 240, 387–395. https://doi.org/10.1016/j.envpol.2018.05.008
Chaukura, N., Kefeni, K.K., Chikurunhe, I., Nyambiya, I., Gwenzi, W., Moyo, W., Abulude, F.O., 2021. Microplastics in the aquatic environment—the occurrence, sources, ecological impacts, fate, and remediation challenges. Pollutants, 1, 95–118. https://doi.org/10.9734/jalsi/2024/v27i2639
Chen, Q., Li, Y., Li, B., 2020. Is color a matter of concern during microplastic exposure to Scenedesmus obliquus and Daphnia magna? Journal of Hazardous Materials, 383, 121224. https://doi.org/10.1016/j.jhazmat.2019.121224
Chen, S., Lou, S., Yang, Z., Liu, S., 2024. Characteristics of organic carbon distributions in tidal wetland of the Yangtze River Estuary. In International Conference on Offshore Mechanics and Arctic Engineering (Vol. 87783, p. V001T01A052). American Society of Mechanical Engineers. https://doi.org/10.1115/OMAE2024-126253
Corcoran, P., Belontz, S.L., Ryan, K., Walzak, M., 2019. Factors controlling the distribution of microplastic particles in benthic sediment of the Thames River, Canada. Environmental Science and Technology, 54, 818–825. https://doi.org/10.1021/acs.est.9b04896
Covernton, G.A., Pearce, C.M., Gurney-Smith, H.J., Chastain, S.G., Ross, P.S., Dower, J.F., Dudas, S.E., 2019. Size and shape matter: A preliminary analysis of microplastic sampling technique in seawater studies with implications for ecological risk assessment. Science of the Total Environment, 667, 124–132. https://doi.org/10.1016/j.scitotenv.2019.02.346
Dada, O.A., Bello, J.O., 2023. Microplastics in carnivorous fish species, water and sediments of a coastal urban lagoon in Nigeria. Environmental Science and Pollution Research, 30, 55948–55957. https://doi.org/10.1007/s11356-023-26410-w
De Vos, B., Lettens, S., Muys, B., Deckers, J.A., 2007. Walkley–Black analysis of forest soil organic carbon: recovery, limitations and uncertainty. Soil Use and Management, 23, 221–229. https://doi.org/10.1111/j.1475-2743.2007.00084.x
Derraik, J.G., 2002. The pollution of the marine environment by plastic debris: A review. Marine Pollution Bulletin, 44, 842–852. https://doi.org/10.1016/s0025-326x(02)00220-5
Dueñas-Moreno, J., Mora, A., Capparelli, M., González-Domínguez, J., Mahlknecht, J., 2024. Potential ecological risk assessment of microplastics in environmental compartments in Mexico: A meta-analysis. Environmental Pollution, 334, 124812. https://doi.org/10.1016/j.envpol.2024.124812
Echebiri, F.O., Abayomi, A.A., Oladosu, N.O., Ayeni, A.O., Adesalu, T.A., Olayinka, K.O., Alo, B.I., 2023. Effects of physicochemical and sediment–mineral dynamics on phosphorus concentration and biological productivity in Lagos coastal waters. Aquatic Sciences, 85, 67. https://doi.org/10.1007/s00027-023-00965-9
Enyoh, C.E., Verla, A.W., Verla, E.N., Ibe, F.C., Amaobi, C.E., 2019. Airborne microplastics: a review study on method for analysis, occurrence, movement and risks. Environmental monitoring and assessment, 191, 1–17. https://doi.org/10.1007/s10661-019-7842-0
Esmeralda, V.G., Shelciya, S., Patterson, J., 2022. Quantification and characterisation of microplastic pollution and its ecological risk in the coastline of Tuticorin, India. International Journal of Civil, Environmental and Agricultural Engineering, 4, 104–121. https://doi.org/10.34256/ijceae2226
Fang, Z.-J., Li, W.-M., Yan, K., Xiao, M., Li, Y.-C., Ding, S., Wang, F.-W., Gao, Y.-K., Liu, X.-W., Li, H., 2025. Occurrence characteristics and influencing factors of microplastics in surface water, sediments, and benthic macroinvertebrates in Huangbai River. Huan Jing Ke Xue = Huanjing Kexue, 46, 1181–1192. https://doi.org/10.13227/j.hjkx.202401168
Fred-Ahmadu, O.H., Ayejuyo, O.O., Benson, N.U., 2020. Microplastics distribution and characterization in epipsammic sediments of tropical Atlantic Ocean, Nigeria. Regional Studies in Marine Science, 38, 101365. https://doi.org/10.1016/j.rsma.2020.101365
Franz, A.W., Buchholz, S., Albach, R.W., Schmid, R., 2024. Towards greener polymers: Trends in the German chemical industry. Green Carbon, 2, 33–44. https://doi.org/10.1016/j.greenca.2024.02.002
Gao, C., Liang, B., Zhang, S., 2024. Accumulation characteristics and ecological risk evaluation of microplastics in sediment cores from the artificial reef area and surrounding seas of Haizhou Bay, north China. Science of The Total Environment, 925, 171789. https://doi.org/10.1016/j.scitotenv.2024.171789
Garcés-Ordóñez, O.J.F., Saldarriaga-Vélez, L.F.E.-D., Patiño, A.D., Cusba, J., Canals, M., Mejía-Esquivia, K., 2022. Microplastic pollution in water, sediments and commercial fish species from Ciénaga Grande de Santa Marta lagoon complex, Colombian Caribbean. Science of the Total Environment, 829, 154643. https://doi.org/10.1016/j.scitotenv.2022.154643
Gayathry, S., Sarlin, P. J., Thomas, J. A., Augustine, A., Darshitha, S., Morris, S., 2023. Microplastics in the edible and inedible tissues of Mugil cephalus from Ashtamudi Lake, a Ramsar site in Kollam, Kerala, India. Ecology, Environment and Conservation, S23–S27. https://doi.org/10.53550/EEC.2023.v29isp2.004
Graca, B., Szewc, K., Zakrzewska, D., Dołęga, A., Szczerbowska-Boruchowska, M., 2017. Sources and fate of microplastics in marine and beach sediments of the Southern Baltic Sea—a preliminary study. Environmental Science and Pollution Research, 24, 7650–7661. https://doi.org/10.1007/s11356-017-8419-5
Gündoğdu, S., Çevik, C., Terzi, Y., Gedik, K., Büyükdeveci, F., Öztürk, R.Ç., 2025. Microplastics in Turkish coastal lagoons: Unveiling the hidden threat to wetland ecosystems. Environmental Pollution, 375, 126351. https://doi.org/10.1016/j.envpol.2025.126351
Hakanson, L., 1980. An ecological risk index for aquatic pollution control. A sedimentological approach. Water Research, 14, 975–1001. https://doi.org/10.1016/0043-1354(80)90143-8
Haque, M.R., Ali, M.M., Ahmed, W., Siddique, M.A.B., Akbor, M.A., Islam, M.S., Rahman, M.M., 2023. Assessment of microplastics pollution in aquatic species (fish, crab, and snail), water, and sediment from the Buriganga River, Bangladesh: An ecological risk appraisals. Science of the Total Environment, 857, 159344. https://doi.org/10.1016/j.scitotenv.2022.159344
Idowu, G.A., Olanipekun, O.O., Adelodun, A.A., Gbadamosi, O.K., Adu, B.W., Aiyesanmi, A.F., 2024b. Meso- and micro-plastics contamination of water, sediments and fish species in coastal communities of Ondo State, Nigeria. Regional Studies in Marine Science, 77, 103727. https://doi.org/10.1016/j.rsma.2024.103727
Idowu, G.A., Oriji, A.Y., Olorunfemi, K.O., Sunday, M.O., Sogbanmu, T.O., Bodunwa, O.K., Shokunbi, O.S., Aiyesanmi, A.F., 2024a. Why Nigeria should ban single-use plastics: Excessive microplastic pollution of the water, sediments and fish species in Osun River, Nigeria. Journal of Hazardous Materials Advances, 13, 100409. https://doi.org/10.1016/j.hazadv.2024.100409
Ilechukwu, I., Ndukwe, G.I., Mgbemena, N.M., Akandu, A.U., 2019. Occurrence of microplastics in surface sediments of beaches in Lagos, Nigeria. European Chemical Bulletin, 8, 371–375.
Inyang, T.I., Ekweozor, I.K.E., Ideriah, T.J.K., Anaero-Nweke, G.N., Gbaa, N.D., Ubulom, S.R., 2024. Characterization of Microplastics in the Sediment of Azuabie and Eagle Island Creeks, Rivers State, Niger Delta. Journal of Global Ecology and Environment, 20, 126–135. https://doi.org/10.56557/jogee/2024/v20i48925
Islam, M.S., Karim, M.R., Islam, M.T., Oishi, H.T., Tasnim, Z., Das, H., Kabir, A.H.M.E., Sekine, M., 2023. Abundance, characteristics, and ecological risks of microplastics in the riverbed sediments around Dhaka city. Science of The Total Environment, 877, 162866. https://doi.org/10.1016/j.scitotenv.2023.162866
Jain, A., Ahmad, F., Gola, D., Malik, A., Chauhan, N., Dey, P., Tyagi, P.K., 2020. Multi dye degradation and antibacterial potential of Papaya leaf derived silver nanoparticles. Environmental Nanotechnology, Monitoring and Management, 14, 100337. https://doi.org/10.1016/j.enmm.2020.100337
Joshi, K., Rabari, V., Patel, H., Patel, K., Rakib, M.R., Trivedi, J.N., Paray, B.A., Walker, T.R., Jakariya, M., 2024. Microplastic contamination in filter-feeding oyster Saccostrea cuccullata: Novel insights in a marine ecosystem. Marine Pollution Bulletin, 202, 116326. https://doi.org/10.1016/j.marpolbul.2024.116326
Kabir, A.E., Sekine, M., Imai, T., Yamamoto, K., Kanno, A., Higuchi, T., 2022. Microplastics in the sediments of small-scale Japanese rivers: Abundance and distribution, characterization, sources-to-sink, and ecological risks. Science of the Total Environment, 812, 152590. https://doi.org/10.1016/j.scitotenv.2021.152590
Keerthika, K., Padmavathy, P., Rani, V., Jeyashakila, R., Aanand, S., Kutty, R., 2022. Spatial, seasonal and ecological risk assessment of microplastics in sediment and surface water along the Thoothukudi, south Tamil Nadu, south east India. Environmental Monitoring and Assessment, 194, 820. https://doi.org/10.1007/s10661-022-10468-z
Laurier, F., Mason, R., 2007. Mercury concentration and speciation in the coastal and open ocean boundary layer. Journal of Geophysical Research: Atmospheres, 112, D06302. https://doi.org/10.1029/2006JD007320
Lawson, E.O., 2011. Physico-chemical parameters and heavy metal contents of water from the mangrove swamps of Lagos Lagoon, Lagos, Nigeria. Advances in Biological Research, 5, 8–21.
Lei, L., Wu, S., Lu, S., Liu, M., Song, Y., Fu, Z., He, D., 2018. Microplastic particles cause intestinal damage and other adverse effects in zebrafish Danio rerio and nematode Caenorhabditis elegans. Science of the total environment, 619, 1–8. https://doi.org/10.1016/j.scitotenv.2017.11.103
Li, Y., Huang, R., Hu, L., Zhang, C., Xu, X., Song, L., Wang, Z., Pan, X., Christakos, G., Wu, J., 2022. Microplastics distribution in different habitats of Ximen Island and the trapping effect of blue carbon habitats. Marine Pollution Bulletin, 181, 113912. https://doi.org/10.1016/j.marpolbul.2022.113912
Liang, B., Gao, S., Zhang, S., Gao, C., 2024. Distribution characteristics and ecological risk assessment of microplastics in intertidal sediments near coastal water. Marine Environmental Research, 195, 106353. https://doi.org/10.1016/j.marenvres.2024.106353
Lithner, D., Larsson, Å., Dave, G., 2011. Environmental and health hazard ranking and assessment of plastic polymers based on chemical composition. Science of the Total Environment, 409, 3309–3324. https://doi.org/10.1016/j.scitotenv.2011.04.038
Luo, H., Liu, C., He, D., Xu, J., Sun, J., Li, J., Pan, X., 2022. Environmental behaviors of microplastics in aquatic systems: A systematic review on degradation, adsorption, toxicity and biofilm under aging conditions. Journal of Hazardous Materials, 423, 126915. https://doi.org/10.1016/j.jhazmat.2021.126915
Mao, Y., Ai, H., Chen, Y., Zhang, Z., Zeng, P., Kang, L., Li, H., 2018. Phytoplankton response to polystyrene microplastics: perspective from an entire growth period. Chemosphere, 208, 59–68. https://doi.org/10.1016/j.chemosphere.2018.05.170
Moore, C.J., 2008. Synthetic polymers in the marine environment: a rapidly increasing, long-term threat. Environmental Research, 108, 131–139. https://doi.org/10.1016/j.envres.2008.07.025
Naidu, S.A., 2019. Preliminary study and first evidence of presence of microplastics and colorants in green mussel, Perna viridis (Linnaeus, 1758), from southeast coast of India. Marine Pollution Bulletin, 140, 416–422. https://doi.org/10.1016/j.marpolbul.2019.01.024
Nakano, H., Alfonso, M.B., Jandang, S., Imai, K., Arakawa, H., 2023. Microplastic pollution indexes in the coastal and open ocean areas around Japan. Regional Studies in Marine Science, 63, 103287. https://doi.org/10.1016/j.rsma.2023.103287
Niu, S., Wang, T., Xia, Y., 2023. Microplastic pollution in sediments of urban rainwater drainage system. Science of the Total Environment, 868, 161673. https://doi.org/10.1016/j.scitotenv.2023.161673
Ojeh, V.N., Balogun, A.A., Okhimamhe, A.A., 2016. Urban-rural temperature differences in Lagos. Climate, 4, 29. https://doi.org/10.3390/cli4020029
Olanipekun, O.O., Idowu, G.A., Aiyesanmi, A.F., 2024. Seasonal variation of meso-and micro-plastics in water and sediments of coastal communities in Ondo State, Nigeria. Environmental Nanotechnology, Monitoring & Management, 22, 101027. https://doi.org/10.1016/j.enmm.2024.101027
Olarinmoye, O.M., Stock, F., Scherf, N., Whenu, O., Asenime, C., Ganzallo, S., 2020. Microplastic presence in sediment and water of a lagoon bordering the urban agglomeration of Lagos, Southwest Nigeria. Geosciences, 10, 494. https://doi.org/10.3390/geosciences10120494
Ololade, I.A., Apata, A., Oladoja, N.A., Alabi, B.A., Ololade, O.O., 2024. Microplastic particles in river sediments and water of southwestern Nigeria: insights on the occurrence, seasonal distribution, composition, and source apportionment. Environmental Science and Pollution Research, 31, 1314–1330. https://doi.org/10.1007/s11356-023-31118-y
Olomukoro, J.O., Enabulele, C.O., 2024. Assessment of heavy metal contamination and sediment characteristics in Ozomu lake, southern Nigeria: Implications for environmental health. Kuwait Journal of Science, 51, 100192. https://doi.org/10.1016/j.kjs.2024.100192
Celis-Hernandez, O., Ávila, E., Rendón-von Osten, J., Briceño-Vera, E.A., Borges-Ramírez, M.M., Gómez-Ponce, A.M., Capparelli, V.M., 2023. Environmental risk of microplastics in a Mexican coastal lagoon ecosystem: Anthropogenic inputs and its possible human food risk. Science of the Total Environment, 879, 163095. https://doi.org/10.1016/j.scitotenv.2023.163095
Peng, G., Xu, P., Zhu, B., Bai, M., Li, D., 2018. Microplastics in freshwater river sediments in Shanghai, China: A case study of risk assessment in mega-cities. Environmental Pollution, 234, 448–456. https://doi.org/10.1016/j.envpol.2017.11.034
Peng, L., Wang, Y., 2022. Sediment organic carbon dominates the heteroaggregation of suspended sediment and nanoplastics in natural and surfactant-polluted aquatic environments. Journal of Hazardous Materials, 440, 129802. https://doi.org/10.1016/j.jhazmat.2022.129802
Porta, R., 2021. Anthropocene, the plastic age and future perspectives. FEBS Open Bio, 11, 948–953. https://doi.org/10.1002/2211-5463.13122
Prata, J.C., Da Costa, J.P., Lopes, I., Duarte, A.C., Rocha-Santos, T., 2019. Effects of microplastics on microalgae populations: A critical review. Science of the Total Environment, 665, 400–405. https://doi.org/10.1016/j.scitotenv.2019.02.132
Radhakrishnan, K., Sivapriya, V., Rajkumar, A., Akramkhan, N., Prakasheswar, P., Krishnakumar, S., Hussain, S.M., 2021. Characterization and distribution of microplastics in estuarine surface sediments, Kayamkulam estuary, southwest coast of India. Marine Pollution Bulletin, 168, 112389. https://doi.org/10.1016/j.marpolbul.2021.112389
Radhakrishnan, K., Krishnakumar, S., Prakasheswar, P., Pradhap, D., Akramkhan, N., Gomathi, S., Krishnaveni, M., Anshu, R., Hussain, S.M., 2023. Potential ecological risk assessment studies based on source and distribution of microplastics from the surface sediments of tropical backwaters, Kerala, India. Total Environment Research Themes, 7, 100063. https://doi.org/10.1016/j.totert.2023.100063
Ranjani, M., Veerasingam, S., Venkatachalapathy, R., Mugilarasan, M., Bagaev, A., Mukhanov, V., Vethamony, P., 2021. Assessment of potential ecological risk of microplastics in the coastal sediments of India: A meta-analysis. Marine Pollution Bulletin, 163, 111969. https://doi.org/10.1016/j.marpolbul.2021.111969
Razaviarani, V., Saudagar, A., Gallage, S., Shrinath, S., Arab, G., 2024. Comprehensive investigation on microplastics from source to sink. Clean Technologies and Environmental Policy, 26, 1755–1782. https://doi.org/10.1007/s10098-024-02738-w
Rochman, C.M., 2015. The complex mixture, fate and toxicity of chemicals associated with plastic debris in the marine environment. In: Bergmann, M., Gutow, L., Klages, M. (eds) Marine Anthropogenic Litter. Springer, Cham. https://doi.org/10.1007/978-3-319-16510-3_5
Saha, M., Naik, A., Desai, A., Nanajkar, M., Rathore, C., Kumar, M., Gupta, P., 2021. Microplastics in seafood as an emerging threat to marine environment: a case study in Goa, west coast of India. Chemosphere, 270, 129359. https://doi.org/10.1016/j.chemosphere.2020.129359
Simon-Sánchez, L., Vianello, A., Kirstein, I.V., Molazadeh, M.S., Lorenz, C., Vollertsen, J., 2024. Assessment of microplastic pollution and polymer risk in the sediment compartment of the Limfjord, Denmark. Science of the Total Environment, 950, 175017. https://doi.org/10.1016/j.scitotenv.2024.175017
Tomlinson, D.L., Wilson, J.G., Harris, C.R., Jeffrey, D.W., 1980. Problems in the assessment of heavy-metal levels in estuaries and the formation of a pollution index. Helgoländer Meeresuntersuchungen, 33, 566–575. https://doi.org/10.1007/BF02414780
U.S. Environmental Protection Agency, 1998. Method 9050A: Electrical conductivity measurement. U.S. Environmental Protection Agency.
U.S. Environmental Protection Agency, 2004. Method 9045D: pH measurement in soils and sediments. U.S. Environmental Protection Agency.
Vecchi, S., Bianchi, J., Scalici, M., Fabroni, F., Tomassetti, P., 2021. Field evidence for microplastic interactions in marine benthic invertebrates. Scientific Reports, 11, 20900. https://doi.org/10.1038/s41598-021-00292-9
Walkley, A., Black, I.A., 1934. An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil science, 37, 29–38. https://dx.doi.org/10.1097/00010694-193401000-00003
Wang, J., Wang, M., Ru, S., Liu, X., 2019. High levels of microplastic pollution in the sediments and benthic organisms of the South Yellow Sea, China. Science of the Total Environment, 651, 1661–1669. https://doi.org/10.1016/j.scitotenv.2018.10.007
Wright, S.L., Thompson, R.C., Galloway, T.S., 2013. The physical impacts of microplastics on marine organisms: a review. Environmental pollution, 178, 483–492. https://doi.org/10.1016/j.envpol.2013.02.031
Xia, F., Yao, Q., Zhang, J., Wang, D., 2021. Effects of seasonal variation and resuspension on microplastics in river sediments. Environmental Pollution, 286, 117403. https://doi.org/10.1016/j.envpol.2021.117403
Xu, P., Peng, G., Su, L., Gao, Y., Gao, L., Li, D., 2018. Microplastic risk assessment in surface waters: A case study in the Changjiang Estuary, China. Marine pollution bulletin, 133, 647–654. https://doi.org/10.1016/j.marpolbul.2018.06.020
Xu, S., Ma, J., Ji, R., Pan, K., Miao, A.J., 2020. Microplastics in aquatic environments: occurrence, accumulation, and biological effects. Science of the total environment, 703, 134699. https://doi.org/10.1016/j.scitotenv.2019.134699
Yahaya, T., Abdulazeez, A., Oladele, E.O., Williams, E.F., Obadiah, C.D., Umar, J.A., Salisu, N., 2022. Microplastics abundance, characteristics, and risk in badagry lagoon in Lagos state, Nigeria. Pollution, 8, 1325–1337. https://doi.org/10.22059/poll.2022.342499.1462
Yahaya, T., Adewale, M.K., Fagbayi, T., Salisu, T. F., Umar, J.A., Nasir, J., 2024. Concentration, characterization, and risk assessment of microplastics in two main rivers in Birnin Kebbi, Nigeria. Environmental Health Engineering and Management Journal, 11, 315–325. http://dx.doi.org/10.34172/EHEM.2024.31
Yakub, A.S., Bassey, B.O., Bello, A.I., Bello, B.O., Olapoju, O.A., Agwu, O.A., Balogun, K.J., 2024. Eco-toxic risk assessment of microplastics in water and sediment across Nigeria Offshore, Gulf of Guinea. Environmental Monitoring and Assessment, 196, 906. https://doi.org/10.1007/s10661-024-13021-2
Yang, H., Sun, F., Liao, H., Guo, Y., Pan, T., Wu, F., 2023. The pollution of microplastics in sediments of the Yangtze River Basin: Occurrence, distribution characteristics, and basin-scale multilevel ecological risk assessment. Water Research, 243, 120322. https://doi.org/10.1016/j.watres.2023.120322
Ye, Y., Zhang, A., Teng, J., Yang, X., Yuan, X., Wang, Q., Zhao, J., 2023. Pollution characteristics and ecological risk of microplastic in sediments of Liaodong Bay from the northern Bohai Sea in China. Marine Pollution Bulletin, 187, 114505. https://doi.org/10.1016/j.marpolbul.2022.114505
Yin, Z., 2023. The pollution of microplastics in sediments: The ecological risk assessment and pollution source analysis. Science of The Total Environment, 859, 160323. https://doi.org/10.1016/j.scitotenv.2022.160323
Yu, X., Liu, Y., Tan, C., Zhai, L., Wang, T., Fang, J., Zhang, B., Ma, W., Lu, X., 2024. Quantifying microplastics in sediments of Jinzhou Bay, China: Characterization and ecological risk with a focus on small sizes. Science of The Total Environment, 949, 174968. https://doi.org/10.1016/j.scitotenv.2024.174968
Yuan, Z., Nag, R., Cummins, E., 2022. Ranking of potential hazards from microplastics polymers in the marine environment. Journal of Hazardous Materials, 429, 128399. https://doi.org/10.1016/j.jhazmat.2022.128399
Zhang, C., Chen, X., Wang, J., Tan, L., 2017. Toxic effects of microplastic on marine microalgae Skeletonema costatum: Interactions between microplastic and algae. Environmental Pollution, 220, 1282–1288. https://doi.org/10.1016/j.envpol.2016.11.005
Zhao, W., Huang, W., Yin, M., Huang, P., Ding, Y., Ni, X., Xia, H., Liu, H., Wang, G., Zheng, H., Cai, M., 2020. Tributary inflows enhance the microplastic load in the estuary: A case from the Qiantang River. Marine Pollution Bulletin, 156, 111152. https://doi.org/10.1016/j.marpolbul.2020.111152
Zhao, X., Wang, J., Leung, K.M.Y., Wu, F., 2022. Color: An important but overlooked factor for plastic photoaging and microplastic formation. Environmental Science and Technology, 56, 9161–9163. https://doi.org/10.1021/acs.est.2c02402
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Copyright (c) 2025 Amii Isaac Obiakara-Amaechi, A.A. Abayomi, T.A. Olorunfemi, L.O. Chukwu
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