Assessment of the concentration of some heavy metals in bottom sediments in the coastal and island areas of the southern region, Vietnam

Authors

  • Phung Thai Duong Dong Thap University, Dong Thap Province, Vietnam
  • Pham Cam Nhung A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Sevastopol, Russia https://orcid.org/0000-0003-4244-9335

DOI:

https://doi.org/10.15243/jdmlm.2024.114.6071

Keywords:

bottom sediments, coastal and island areas, heavy metal content, southern region, Vietnam

Abstract

Rivers, such as the Dong Nai, Saigon, and Mekong, are subject to urban, industrial, and agricultural pollution, leading to a high risk of heavy metal accumulation in bottom sediments. With the aid of a boat and bucket as tools, a survey was conducted to collect sediment samples from the coastal areas (downstream of Dong Nai, Saigon, Mekong Rivers) and islands (Con Dao, Tho Chu) in the Southern region of Vietnam during April and May 2023. Out of a total of 35 samples collected, preserved according to the guidelines of the Ministry of Natural Resources and Environment, the heavy metal indicators were analyzed by atomic absorption spectroscopy, and the average heavy metal concentrations were in the following order: Zn>Cu>Cd>Pb>As. Compared with the Vietnamese Technical Regulation (QCVN 43:2017/BTNMT) on sediment quality and the sediment quality of the Canadian Environment Ministry, the heavy metal concentrations in the research area have not exceeded the specified standards. However, compared with standards from the USA, the Russian Federation, and other regions in Vietnam, the levels are quite high. Moreover, the Igeo index indicates that the concentration of Pb, As, and Cd at many coastal locations downstream of the rivers is heavily polluted. This evidences that in addition to pollution from upstream sources, the activities of the local population significantly contribute to the accumulation of pollution. The research results provide a scientific basis for limiting pollution sources to ensure sustainable development of the studied areas, which is necessary today.

References

Canadian Environmental Quality Guidelines. 2001. Canadian Sediment Quality Guidelines for the Protection of Aquatic Life, Summary Tables, Updated. https://www.pla.co.uk/Environment/Canadian-Sediment-Quality-Guidelines-for-the-Protection-of-Aquatic-Life.

Cenci R.M. and Martin J.M. 2004. Concentration and fate of trace metals in Mekong River Delta. Science of The Total Environment 332:167-182. https://doi.org/10.1016/j.scitotenv.2004.01.018

Costa-Boddeker, S., Hoelzmann, P., Thuyen, L.X., Huy, H.D., Nguyen, H.A., Richter, O. and Schwalb, A. 2017. Ecological risk assessment of a coastal zone in Southern Vietnam: Spatial distribution and content of heavy metals in water and surface sediments of the Thi Vai Estuary and Can Gio Mangrove Forest. Marine Pollution Bulletin 114:1141-1151. https://doi.org/10.1016/j.marpolbul.2016.10.046

Dieu, H.T.Q. 2021. Analysis of the form of some metals in sediments and assessment of the ability to accumulate copper and lead in clams (Meretrix lyrata) raised in the Tien River estuary, Scientific Doctorate Thesis, College of Sciences, Hue University.

Federal Law of the Russian Federation. 1999. On the sanitary and epidemiological welfare of the population, https://www.dioxin.ru/doc/gn2.1.7.2041-06.htm.

Gassert, F., Rai, P., Reig, P. and Luck, M. 2012. Mekong River Basin Study. Working Paper. Washington, DC: World Resources Institute.

Huang, X. 2010. Water Quality in the Tibetan Plateau (Chemical Evaluation of the Headwaters of Four Major Asian River). Dissertations in Forestry and Natural Sciences (Publications of the University of Eastern Finland), 75 p

Hung, T.T., Huyen, D.T., Tu, T.A. and Desmet, M. 2019. Presence of trace elements in sediments of Can Gion mangrove forest, Ho Chi Minh City, Vietnam. Vietnam Journal of Earth Sciences 4(1):21-35. https://doi.org/10.15625/0866-7187/41/1/13543

Le, L.T.H. and, Thuy, L.T. 2018. Content of some heavy metals in sediments in the coastal waters of Quy Nhon, Central Vietnam. Journal of Agriculture and Rural Development 2:153-158.

Ministry of Natural Resources and Environment. 2017. QCVN 43:2017/BTNMT (National technical regulation on sediment quality), Hanoi.

Savichev, O.G. and Duong, P.T. 2013. Zonal patterns of changes in the chemical composition of river sediments in Siberia and the conditions of its formation. News of Tomsk Polytechnic University 1:157-161.

Savichev, O.G. and Duong, P.T. 2014. Ecological and geochemical state of surface waters and bottom sediments in the Mekong Delta (Vietnam). News of Tomsk State University 388:246-252.

Tu, N.P.C., Ha, N.N., Tri, N.N. and Dong, N.V. 2020. Distribution of heavy metals in sediment along the Southern coast of Vietnam. IOP Conference Series: Earth and Environmental Science 589:012014. https://doi.org/10.1088/1755-1315/589/1/012014

Tran T.A.M., Leermakers, M., Hoang, T.L., Nguyen, V.H. and Elskens, M. 2018. Metals and arsenic in sediment and fish from Cau Hai lagoon in Vietnam: Ecological and human health risks. Chemosphere 210:175e182. https://doi.org/10.1016/j.chemosphere.2018.07.002

U.S Environmental Protection Agency. 2014.. Toxicological Benchmarks for Screening Contaminants of Potential Concern for Effects on Sediment-Associated Biota. Report of the Sediment Criteria Subcommittee, Science Advisory Board. ES/ER/TM-95/R4, U.S Environmental Protection Agency, Washington, DC, https://www.osti.gov/servlets/purl/258038.

Vietnam (Ministry of Natural Resources and Environment, 2017). National Technical Regulation on Sediment Quality.

Vinh, L.T. 2014. Quality of sedimentary environment in Nai Lagoon, Ninh Thuan Province. Vietnam Journal of Marine Science and Technology 14(1):59-67. https://doi.org/10.15625/1859-3097/14/1/4030

Vinh, L.T. and Tam, P.H. 2015. Environmental quality of surface sediments in the south of Nha Trang Bay. Vietnam Journal of Marine Science and Technology 15(1):91-97. https://doi.org/10.15625/1859-3097/15/1/4431

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Submitted

06-02-2024

Accepted

17-04-2024

Published

01-07-2024

How to Cite

Duong, P. T., & Nhung, P. C. (2024). Assessment of the concentration of some heavy metals in bottom sediments in the coastal and island areas of the southern region, Vietnam . Journal of Degraded and Mining Lands Management, 11(4), 6071–6079. https://doi.org/10.15243/jdmlm.2024.114.6071

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Section

Research Article