Open AccessAquatic Systems Biogenic Detritus Role in Metals and Metalloids Accumulation: Examples of Eight Heavy Metals and Arsenic
Publication year - 2010
Publication title -
vodnoe hozâjstvo rossii: problemy, tehnologii, upravlenie/vodnoe hozâjstvo rossii : problemy, tehnologii, upravlenie
Language(s) - English
Resource type - Journals
eISSN - 2686-8253
pISSN - 1999-4508
DOI - 10.35567/1999-4508-2010-1-5
Subject(s) - microcosm , detritus , environmental chemistry , arsenic , chemistry , metalloid , bioconcentration , metal , bioaccumulation , ecology , biology , organic chemistry
The detritus role in the elements including heavy metals accumulation under the conditions of the controlled experimental systems. Detritus that was formed over 8 months in microcosms with Viviparus viviparus and Ceratophyllum demersum, contained As and heavy metals. Their concentrations in detritus were determined with atomic-sorption spectrometry (ASS) and were positioned in the following descending order (from the higher concentrations to the lower concentrations): Fe > Mn > Zn > Cu > Pb > As > Co > Cd > Cr. If a mixture of several heavy metals had been added to the experimental microcosm these metals (Fe, Mn, Zn, Cu, Co, Cd, Cr) were observed in the detritus material residue in higher concentration that in reference microcosm. The most distinct increase of the metals content in detritus in the microcosms with the added metals occurred for Cd (more than 3 times exceeding of the concentration in comparison with the reference one), Co (more than 13 times) and Cr (more than 150 times). These data confirm the proposed theory of the biota poly-functional role in water quality control and water self-purification.