Abstract
This study examined the spatial distribution, contamination status and controlling factors of trace metal(loid)s of the surface and bottom water, surface sediments in the Yellow River Estuary and adjacent area. The results indicated that the distribution of metal(loid)s in the surface and bottom water is relatively consistent, and high concentrations detected in the region extending from the Yellow River Estuary to the northwest of the study area. However, the concentrations of all metal(loid)s in the water bodies are below the limits specified for Grade I seawater issued by the Ministry of Ecology and Environment of China. In the surface sediments, high-concentration areas of metal(loid)s are mainly distributed in regions with fine-grained sediments, such as the Yellow River Estuary and the northern part of the study area. The assessment results obtained by using the Geo-accumulation index and Potential ecological hazard index indicate that the pollution of Hg and Cd is serious, besides the geological background, it is significantly affected by releases from human activities. Most metal(loid)s in the water bodies of the study area come from the input of the Yellow River and the impact of near-shore human activities. Similarly, in the surface sediments, most metal(loid)s are derived from the Yellow River input, while Hg, Pb, Cd, and As may also be affected by offshore industrial activities. The spatial distribution of metal(loid)s is controlled by the enrichment of heavy metals in fine-grained sediments under hydrodynamic sorting, as well as sediment components such as TOC content.
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The datasets used and/or analysed during the current study available from the corresponding author on reasonable request.
References
Tan, S., Zhang, T. & Yang, Z. Vertical distribution patterns and ecological risk assessment of heavy metal(loid)s pollution in a sediment profile from Bohai Sea. Mar. Pollut. Bull. 209, 117089 (2024).
Nikfar, F. et al. Carcinogenic riskassessment, health endpoint and source identification of heavy metals in Mahshahr, Iran. Toxins Rev. 42(1), 132–145 (2023).
Liu, Y. et al. Distribution, source and risk assessment of heavy metals in the seawater, sediments, and organisms of the Daya Bay. China. Mar. Pollut. Bull. 174, 113297 (2022).
Guan, C. et al. Quantitative and predictive evaluation of heavy metal pollution in bay ecosystems of northern China: Characteristics, accumulation, and risk assessment. ACS ES&T Water 4(1), 57–67 (2024).
Soliman, N. et al. Contamination status and potential risk of metals in marine sediments of Shalateen coast, the Red Sea. Soil Sediment Contam. 31(1), 40–56 (2022).
Liu, M. et al. The Speciation of Heavy Metals and their Origins in Surficial Sediments of the Central Bohai Sea. Acta Oceanol. Sin. 35 (9), 98–110 (2016).
Li, X. et al. Heavy metal distribution in sediment profiles of the Pearl River estuary, South China. Appl. Geochem. 15, 567–581 (2000).
Liu, M. et al. Accumulation and transformation of heavy metals in surface sediments from the Yangtze River estuary to the East China Sea shelf. Environ. Pollut. 245, 111–121 (2019).
Ip, C. et al. Trace metal distribution in sediments of the Pearl River Estuary and the surrounding coastal area, South China. Environ. Pollut. 147(2), 311–323 (2007).
Geng, J., Wang, Y. & Luo, H. Distribution, sources, and fluxes of heavy metals in the Pearl River Delta, South China. Mar. Pollut. Bull. 101(2), 914–921 (2015).
Chen, Y. et al. Metals in Yellow River estuary sediments during the 2018 water-sediment regulation scheme period. Mar. Pollut. Bull. 166, 112177 (2021).
Özkaynak, Ö. H., İçemer, G. & Merdun, H. Determination of the risk on human health of heavy metals contained by ship source bilge and wastewater discharged to the sea on the Mediterranean by monte carlo simulation. Sustainability 14(14), 8408 (2022).
Tian, X. et al. Heavy metals in the sediments of Laoshan Bay, China: Distribution and contamination assessment. Mar. Pollut. Bull. 185, 114264 (2022).
Madadi, R., Kachoueiyan, F. & De-la-Torre, G. Effect of redox potential on the heavy metals binding phases in estuarine sediment: Case study of the Musa Estuary. Mar. Pollut. Bull. 195, 115565 (2023).
Wang, P. et al. Spatial distribution, control factors and sources of heavy metal in the surface sediments of Fudu Estuary waters, East Liaodong Bay, China. Mar. Pollut. Bull. 156, 111279 (2020).
Hu, C. et al. Sedimentation and transformation of heavy metals during the transport from the Yellow River estuary to the sea: Evidence from surface sediments of the Yellow River subaqueous delta. Mar. Pollut. Bull. 207, 116862 (2024).
Wang, H. et al. Dispersal pattern of suspended sediment in the shear frontal zone off the Huanghe (Yellow River) mouth. Cont. Shelf Res. 27(6), 854–871 (2007).
Yang, S. et al. A review on the provenance discrimination of sediments in the Yellow Sea. Earth-Sci. Rev. 63(1–2), 93–120 (2003).
Miao, C., Ni, J. & Borthwick, A. Recent changes of water discharge and sediment load in the Yellow River basin, China. Prog. Phys. Geogr. 34, 541–561 (2010).
Hu, B. et al. Seasonal variability and flux of particulate trace elements from the Yellow River: Impacts of the anthropogenic flood event. Mar. Pollut. Bull. 91, 35–44 (2015).
Liu, W. et al. Distribution and contamination of trace elements in surface sediments of the Yellow River Estuary and Laizhou Bay, China. Environ. Res. Commun. 6, 105016 (2024).
Gao, X., Zhou, F. & Chen, C. Pollution status of the Bohai Sea: An overview of the environmental quality assessment related trace metals. Environ. Int. 62, 12–30 (2014).
Folk, R. & Ward, W. Brazos river bar: A study of significance of grain size parameters. Int. J. Sedim. Res. 27, 3–26 (1957).
Forstner, U. & Muller, G. Heavy metal accumulation in river sediments: A response to environmental pollution. Geoforum 14, 53–61 (1973).
MacDonald, D. et al. Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5(4), 253–278 (1996).
MacDonald, D., Ingersoll, C. & Berger, T. Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Arch. Environ. Contam. Toxicol. 39 (1), 20–31 (2000).
Long, E., Field, L. & MacDonald, D. Predicting toxicity in marine sediments with numerical sediment quality guidelines. Environ. Toxicol. Chem. 17 (4), 714–727 (1998).
Nobi, E. et al. Geochemical and geo–statistical assessment of heavy metal content in the sediments of different coastal ecosystems of Andaman Islands, India. Estuarine, Coastal and Shelf Science, 87 (2), 253–264 (2010).
Müller, G. Index of geoaccumulation in sediments of the Rhine River. GeoJournal 2, 108–118 (1969).
Tian, J., Li, Y. & Chen, D. Elemental background variation pattern of loess in China. Acta Scinentiae Circumstantiae 11(3), 253–262 (1991).
Hakanson, L. An ecological risk index for aquatic pollution control: A sedimentological approach. Water Res. 14, 975–986 (1980).
Sheng, J. et al. Distribution patterns of heavy metals in surface sediments of the Yangtze Estuary and its adjacent areas and environmental quality assessment. Environ. Sci. 29 (9), 2405–2412 (2008). (in Chinese with English abstract).
Huang, X., Liang, K. & Liu, X. The distribution and assessment of heavy metals in surficial sediments in the Pearl River estuary. Trans. Oceanol. Limnol. 3, 27–36 (2006).
Liu, M. et al. The environment quality of heavy metals in sediments from the central Bohai Sea. Mar. Pollut. Bull. 100(1), 534–543 (2015).
Fang, T. et al. Distribution and contamination of trace metals in surface sediments of the East China Sea. Mar. Environ. Res. 68, 178–187 (2009).
Huang, P. et al. Distribution, enrichment and sources of heavy metals in surface sediments of the North Yellow Sea. Cont. Shelf Res. 73, 1–13 (2013).
Yuan, H. et al. Distribution and contamination of heavy metals in surface sediments of the South Yellow Sea. Mar. Pollut. Bull. 64(10), 2151–2159 (2012).
Zhang, Y. & Du, J. Background values of pollutants in sediments of the South China Sea. Acta Oceanol. Sin. 27(4), 161–166 (2005).
Mecray, E. & Buchholtz Ten Brink, M. Contaminant distribution and accumulation in the surface sediments of Long Island Sound. J. Coastal Res. 16 (3), 575–590 (2000).
Matthieu, M. et al. Copper addition by organic matter degradation in the freshwater reaches of a turbid estuary. Sci. Total Environ. 409, 1539–1549 (2011).
Sundaray, S. et al. Geochemical speciation and risk assessment of heavy metals in the river estuarine sediments-A case study: Mahanadi basin, India. J. Hazard. Mater. 186, 1837–1846 (2011).
Zhang, H. et al. Study on the distribution characteristic of primary productivity and its controlling factors in Bohai Bay in the early summer. Acta Ecol. Sin. 39(17), 6416–6424 (2019).
Acknowledgements
he authors would like to thank the helpful comments and suggestions provided by the editors and anonymous reviewers. This study was funded by Open Fund Project of Key Laboratory of Ecological Prewarning, Protection and Restoration of Bohai Sea, Ministry of Natural Resources (No. 2024218). We thank our laboratory colleagues for their collaboration in sampling and data acquisition.
Funding
This study was funded by Open Fund Project of Key Laboratory of Ecological Prewarning, Protection and Restoration of Bohai Sea, Ministry of Natural Resources of China (No. 2024218).
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Conceptualization, WeihanYin and Zhang Mengmeng; methodology, Yin Weihan, Yu Qingyun, Liu Xing and Li Jing; software, Jing Li, Liu Yingying, and Zhang Yuhao; validation, Yu Qingyun, Li Jing and Liu Yingying; formal analysis, Zhang Mengmeng and Yu Qingyun; investigation, Yin Weihan, Liu Xing and Zhang Yuhao; resources, Yin Weihan and Zhang Mengmeng; data curation, Yu Qingyun and Liu Xing; writing—original draft preparation, Yin Weihan, Zhang Mengmeng; writing—review and editing, Yin Weihan, Zhang Mengmeng, Li Jing, Liu Yingying and Zhang Yuhao; visualization, Liu Xing, Li Jing and Liu Yingying; supervision, Zhang Mengmeng; project administration, Yin Weihan and Zhang Mengmeng; funding acquisition, Yin Weihan. All authors have read and agreed to the published version of the manuscript.
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Yin, W., Zhang, M., Yu, Q. et al. Distribution, pollution status and controlling factors of trace metal(loid)s in Yellow river Estuary and adjacent area. Sci Rep (2026). https://doi.org/10.1038/s41598-026-41583-3
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DOI: https://doi.org/10.1038/s41598-026-41583-3
