Peculiarities of migration of mercury in water and bottom sediments of the estuary area of the Red River (Vietnam)

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Abstract


The paper assessed the content of mercury in water and bottom sediments in the mouth area of the Red River of Vietnam. Given the spatial distribution of mercury in the dissolved, suspended forms and in sediments. The studies were conducted at 30 stations 2 times a year (during the flood and low-water periods) in 2014-2016. Samples of bottom sediments were collected in the surface layer. The spatial distribution of mercury was carried out using the kriging method in ArcGIS 10.2.2. During the study period it was found that the concentration of mercury in the water of the Red River varies from 0,05 to 0,08 μg/l during low-water periods and 0,07 to 0,11 μg/l during the flood period. Towards the sea, the concentration of dissolved mercury decreased. Mercury concentrations in suspended form and bottom sediments increase towards the sea and reach a maximum in the marginal filter. In river waters, the main forms of mercury existence are dissolved and suspended, and in the marginal filter - in bottom sediments. The bottom sediments of the estuary area of the Red River are distinguished by a higher content of Hg compared to uncontaminated soils in reservoirs of temperate and northern latitudes, as well as with bottom sediments of water bodies in another region of Vietnam.


About the authors

N. T. T. Nguyen

Astrakhan State Technical University

Author for correspondence.
Email: nguyenthuynhung.ast@gmail.com
16G Tatischeva St., Astrakhan, 414056, Russian Federation

master of environment, postgraduate student, Astrakhan State Technical University

Irina V Volkova

Astrakhan State Technical University

Email: gridasova@mail.ru
SPIN-code: 3433-8124
16G Tatischeva St., Astrakhan, 414056, Russian Federation

Doctor of Biological Sciences, Associate Professor, Professor of the Department of Hydrobiology and General Ecology, Astrakhan State Technical University

Vera I Egorova

Astrakhan State Technical University

Email: lekaego@mail.ru
16G Tatischeva St., Astrakhan, 414056, Russian Federation

Candidate of Biological Sciences, Associate Professor, Department of Applied Biology and Microbiology, Astrakhan State Technical University

References

  1. Mason RP, Fitzgerald WF, Hurley J, Hanson AK, Donaghay PL, Sieburth JM. Mercury biogeochemical cycling in a stratified estuary. Limnol. Oceanogr. 1993;38(6): 1227-1241.
  2. Hai Luu Duc et al. Accumulation of mercury in sediment and bivalves from Cua Dai estuary, Hoi An city. VNU Journal of Science, Earth Sciences. 2010;26: 48-54.
  3. Ky NV. Ust’evye oblasti rek V’etnama [Estuarine areas of the rivers of Vietnam]. Odessa: Astroprint Publ.; 2004.
  4. Luu TNM, Garnier J, Billen G, Orange D, Nemery J, Le TPQ, Tran HT, Le LA. Hydrological regime and water budget of the Red River Delta (Northern Vietnam). Journal of Asian Earth Sciences. 2017;37: 219-228.
  5. Mai CV, Stive MJF, Selder PHAJM. Coastal protection strategies for the Red River delta. J. Coastal Research. 2009;25(1): 105-116.
  6. GOST 31861-2012. Voda. Obschie trebovaniya k otboru prob. Moscow: Standartinform Publ.; 2013.
  7. GOST 17.1.5.01-80. Ohrana prirody (SSOP). Gidrosfera. Obshchie trebovaniya k otboru prob donnyh otlozhenij vodnyh ob”ektov dlya analiza na zagryaznennost’ (s izm. No. 1). Moscow: IPK Izdatel’stvo standartov; 2002.
  8. Lobus NV, Komov VT, Nguen Thi Haj Than’. Soderzhanie rtuti v komponentah ehkosistem vodoemov i vodotokov provincii Kkhan’ Hoa (Central’nyj V’etnam). Vodnye resursy. 2011;37(6): 733-739.
  9. Beiras R et al. Mercury concentration in seawater, sediments and wild mussels from the coast of Galicia (Northweast Spain). Marine Pollution Bulletin. 2002;44: 340-349.
  10. Nguyen Thi Thuy Nhung, Volkova IV. K voprosu o nakoplenii tyazhelyh metallov (Pb, Hg, As) v komponentah vodnyh ehkosistem ust’evoy oblasti reki Krasnaya (Hongha) (V’etnam) [To the question of accumulation of heavy metals (Pb, Hg, As) in the components of aquatic ecosystems of estuarine area of the Red River (Vietnam)]. Vestnik AGTU. Seriya: Rybnoe hozyaystvo. 2018;1: 132-140.
  11. Lisitsyn AP. Marginal’nyy fil’tr okeanov [A Marginal Filter of the Oceans]. Okeanologiya. 1994;34(5): 735-747.
  12. Anikiev VV, Goryachev HA i dr. Povedenie tyazhelyh metallov pri smeshenii rechnyh i morskih vod. Geohimiya. 1991;7: 1642-1651.

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Copyright (c) 2018 Nguyen N.T., Volkova I.V., Egorova V.I.

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