The role of biodetritus in accumulation of elements in aquatic ecosystems

First paper to report concentrations of a number of rare earth elements (Ce, Nd, U, Hf, Cs , Au) in biological detritus in an aquatic system. Scientific article: S.A.Ostroumov, G.M.Kolesov. The role of biodetritus in accumulation of elements in aquatic ecosystems.

First paper  to report the concentrations of a number of rare earth elements (Ce, Nd, U, Hf, Cs, Au) in biological detritus in an aquatic system. Scientific article: The role of biodetritus in accumulation of elements in aquatic ecosystems.

http://5bio5.blogspot.com/2012/09/first-paper-report-concentrations-of.html

In 2010, a first paper was published that reported the concentrations of a number of rare earth elements (Ce, Nd, U, Hf, Cs, Au) in biological detritus in an aquatic system (Ostroumov, Kolesov, 2010 ).

Key words, a short list : first measurements, biodetritus, detritus, rare earth elements, water system, sediments.

In 2010, a first paper was published that reported the concentrations of a number of rare earth elements (Ce, Nd, U, Hf, Cs , Au) in biological detritus in an aquatic system (Ostroumov, Kolesov, 2010 ). Until this work was done, nothing was known on concentrations of these rare earth elements in the detritus of biological origin in water ecosystems. It is important that the research was done using a completely controlled experimental system so that the biological species of aquatic organisms that produced the biodetritus were known: two species of mollusks and one species of aquatic macrophyte.

Importance of this publication:

The biological detritus is one of the most important parts of the bottom sediments in water bodies and water streams. The biodetritus is the main source of organic matter in sediments. In turn, the organic matter is one of the main factors to environmental chemistry and toxicology of aquatic ecosystems.

The rare earth elements are a key component of modern hi-technology products and they are a new component in the modern solid wastes and waste waters. This paper is an innovative and significant contribution to the database for modern environmental monitoring.

Besides the elements mentioned above, the concentrations of Ca, Zn, Ba, Br , Se, La, Sb were also measured.

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Biodetritus that formed over a 7-month period in microcosms with Viviparus viviparus, Unio pictorum , and Ceratophyllum demersum contained a number of elements. This is the first study to determine concentrations of some elements in biodetritus. Neutron activation analysis showed that the elements concentrations decrease in the following order: Ca > Zn > Ba > Br > Ce > Se > Nd > La > U > Hf > Sb > Th > Sm > S > Cs > Au. The data obtained contribute to understanding of the multifunctional (polyfunctional) role of aquatic organisms in aquatic ecosystems.

http://www.scribd.com/doc/104719698 

  

Ключевые слова:

Цинк (Zn), живородка,  уран (U), торий (Th), самарий (Sm), селен (Se), сурьма (Sb), редкоземельные элементы, Unio pictorum, неодим (Nd), лантан (La), гафний (Hf),  экосистемы,  детрит,  цезий (Сs), Ceratophyllum demersum, церий (Ce), кальций (Сa), бром (Br), барий (Ba), золото (Au), водные, биогеохимия

Title: The role of biodetritus in accumulation of elements in aquatic ecosystems

Authors: Ostroumov S. A.; Kolesov G. M.

Affiliation of the authors: Moscow State University; Institute of Geochemistry and Analytical Chemistry of  the Russian Academy of Sciences;

Source: CONTEMPORARY PROBLEMS OF ECOLOGY,  2010; Volume: 3,   Issue: 4,   Pages: 369-373,   DOI: 10.1134/S1995425510040016,   Published:  2010;

full text free: http://www.scribd.com/doc/75098592/

http://moscowstate.academia.edu/SergeiOstroumov/Papers/1897024

http://moscowstate.academia.edu/SergeiOstroumov/Papers/1897024/The_role_of_biodetritus_in_accumulation_of_elements_in_aquatic_ecosystems

The reference in a traditional form:

Ostroumov S. A., Kolesov G. M. The role of biodetritus in accumulation of elements in aquatic ecosystems. -  CONTEMPORARY PROBLEMS OF ECOLOGY, 2010;  3 (4): 369-373.