MERCURY CONTENT IN BIVALVES AT THE ESTUARY AREA OF THE RED RIVER (VIETNAM)
Abstract
This article evaluates the content of mercury in various tissues (gills, mantle, hepatopancreas, and body "foot") in four species of bivalves in the estuary area of the Red River in Vietnam. In this article, the authors determine the dependencies of the mercury content in the tissues of mollusks on the indicators of the length and mass of tissues and on the content of the pollutant in dissolved, suspended forms and in bottom sediments. The content of mercury in the tissues of mollusks varies from 30.5±1.2 to 415.8±6.3 ng/g. The highest content of the toxicant was observed in the hepatopancreas of Austriella corrugate, while the lowest was seen in the “foot” of Lutraria rhynchaena. Close, reliable, positive correlations between the concentration of mercury in the tissues of mollusks and the contents of its suspended form in the bottom water layer and in bottom sediments (r from 0.68 to 0.92, p <0.05) were observed. Bivalves can be used as one of the objects of biomonitoring when studying the distribution of mercury in the estuary area of the Red River.
Full text is available in pdf only
References
Zilov E.A. Gidrobiologiya i vodnaya ekologiya (organizatsiya, funktsionirovanie i zagryaznenie vodnykh ekosistem): ucheb. Posobie [Hydrobiology and aquatic ecology (organization, functioning and pollution of aquatic ecosystems): textbook] / E.A. Zilov. – Irkutsk, 2008. – 138 p. [in Russian]
Pham Kim Phuong. To study accumulation of heavy metals As, Cd, Pb and Hg in Bivalves from natural environment / Pham Kim Phuong, Nguyen Thi Dung // Science and technology (in Vietnam). – 2007. – Vol. 45, No. 5. – P. 57 – 62.
Linnik P.N. Soderzhanie i formy migratsii metallov v vode Zaporozhskogo vodokhranilishcha [The content and forms of migration of metals in the water of the Zaporozhye reservoir] / P.N. Linnik, V.A. Zhezherya, I.B. Zubenko, A.V. Zubko // Gidrobiol. Zhurn. – 2010. – Vol. 46. - №4. – P. 97 – 116. [in Russian]
Lobus N.V. Regional'nye osobennosti soderzhaniya rtuti v myshechnoi tkani ryb iz vodoemov tropicheskogo V'etnama [Regional features of the mercury content in the muscle tissue of fish from water bodies of tropical Vietnam] / N.V. Lobus, V.T. Komov // Sbornik trudov Vtorogo mezhdunarodnogo simpoziuma Rtut' v biosfere: ekologo-geokhimicheskie aspekty [Proceedings of the Second International Symposium Mercury in the Biosphere: Ecological and Geochemical Aspects]. – 2015. – P. 236 – 240. [in Russian]
Bioaccumulation of total and methyl mercury in three earthworm species (Drawida sp., Allolobophora sp., and Limnodrilus sp.) / S. Z. Zhang et al. // Bulletin of Environmental Contamination and Toxicology. – 2009. - №83 – R.937-942.
Mur D. Tyazhelye metally v prirodnykh vodakh. Kontrol' i otsenka vliyaniya [Heavy metals in natural waters. Monitoring and impact assessment] / D. Mur, S. Ramamurti. – M.: Mir, 1987. – 250 p. [in Russian]
Lukashev, D.V. Raspredelenie tyazhelykh metallov v organakh mollyuskov Anodonta anatina v usloviyakh postupleniya zagryaznennykh stokov [Distribution of heavy metals in the organs of Anodonta anatina mollusks under conditions of contaminated effluent intake] / D.V. Lukashev // Gidrobiologicheskii zhurnal. – 2009. - № 45 (5). – P. 98-109. [in Russian]
Kupina, N.M. Osnovnye rezul'taty issledovaniya dvustvorchatykh mollyuskov pribrezhnoi zony Yaponskogo moray [The main results of the study of bivalve mollusks in the coastal zone of the Sea of Japan] / N.M. Kupina // Izvestiya TINRO. – 2015. – Vol 18. – P. 249-257. [in Russian]