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Role of biogenic detritus of aquatic systems in accumulation of metals and metalloids as exemplified by eight heavy metals and arsenic

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Role of biogenic detritus of aquatic systems in accumulation of metals and metalloids as exemplified by eight heavy metals and arsenic

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2010;


ABSTRACT 
Ostroumov S.A., Demina L.L. Role of biogenic detritus of aquatic systems in accumulation of metals and metalloids as exemplified by eight heavy metals and arsenic. – Water Sector of Russia (Vodnoe Khozyaistvo Rossii, ISSN 1999-4508). 2010, No. 1, p. 60-69.

https://www.researchgate.net/publication/260460510_ ;

Bibliogr. 24 refs. Annotation in English (p.106). Detritus that accumulated over 8 months in the freshwater microcosms with molluscs Viviparus viviparus and macrophytes Ceratophyllum demersum contained As and metals. Their concentrations in the detritus were measured using atomic absorption spectroscopy (AAS). The concentrations decreased in the order: Fe > Mn > Zn > Cu > Pb >As> Со > Cd > Cr. If a mixture of some metals was added to the water of the microcosm, those metals (Со, Fe, Mn, Zn, Cu, Со, Cd, Cr) were found in the detritus at concentrations higher than in the control. The most pronounced increase was found for the concentration of Cd (increase by the factor of over 3), Со (increase by the factor of over 13), and for Cr (increase by the factor of over 150). The new data confirm the recent theory of the polyfunctional role of the biota in water quality control and water self-purification (Doklady Akademii Nauk, 2004, V.396. P.136-141; Ekologiya, No. 6, 2005, с. 452–459).