Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Hydrobiological Journal
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN Imprimir: 0018-8166
ISSN On-line: 1943-5991

Volume 56, 2020 Volume 55, 2019 Volume 54, 2018 Volume 53, 2017 Volume 52, 2016 Volume 51, 2015 Volume 50, 2014 Volume 49, 2013 Volume 48, 2012 Volume 47, 2011 Volume 46, 2010 Volume 45, 2009 Volume 44, 2008 Volume 43, 2007 Volume 42, 2006 Volume 41, 2005 Volume 40, 2004 Volume 39, 2003 Volume 38, 2002 Volume 37, 2001 Volume 36, 2000 Volume 35, 1999 Volume 34, 1998

Hydrobiological Journal

DOI: 10.1615/HydrobJ.v52.i2.90
pages 83-100

Methodical Peculiarities of the Preparation of Samples of Suspended Matter and Bottom Sediments

V. A. Zhezherya
Institute of Hydrobiology National Academy of Sciences of Ukraine, Kiev
P. N. Linnik
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev
T. P. Zhezherya
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
M. P. Skobley
State Ecological Inspection Zakarpatye Region Uzhgorod, Ukraine


The procedure of two-step preparation of the samples of suspended matter and bottom sediments is given in the paper. The first step includes "wet combustion" of suspended matter in the mixture of the concentrated sulfuric and nitric acids, whereas the second step − hydrothermal treatment of the non-decomposed residue of suspended matter in the steel autoclave with teflon crucible in the alkaline medium (3.2 Mol/L NaOH) at 230°C for 4.5−5.0 hours. It has been shown that only some portion of suspended matter, which is unstable and depends on its composition, origin, and character, is decomposed as a result of "wet combustion". At the first step of suspended matter samples preparation, the degree of extraction varies over a wide range. The major portion of such metals as Al, Fe, Cu, Ti, Cd, Pb, Zn, and Ni, and also of phosphorus, is extracted at the step of "wet combustion". It includes chemical elements absorbed on suspended matter and detritus and those registered in the organisms of hydrobionts, which remain on the membranous filter with the openings of 0.40 pm in diameter. The fraction, which is rather readily extracted from the composition of suspended matter in the slightly acidic medium at pH ~ 4.0, is in the composition of this portion of metals. This fraction of chemical elements should be considered as bioavailable for aquatic organisms. At the same time, silicon is registered mainly in the poorly dissolved fraction of suspended matter (94.3−99.9%). It is released only as a result of hydrothermal treatment.

Data on the total content of the studied chemical elements in the composition of suspended matter in some water bodies and on the degree of their extraction on the first and second steps of sample preparation, and also in the slightly acidic medium, are given in the paper.

Articles with similar content:

Influence of the Component Composition of Organic Matter on Relationship between Dissolved Forms of Metals in the Surface Waters
Hydrobiological Journal, Vol.49, 2013, issue 1
Ya. S. Ivanechko , R. P. Linnik, V. A. Zhezherya, P. N. Linnik
Oxygen Regime of the Water Bodies as Main Factor of Different Metals Forms Migration within the System “Bottom Sediments - Water”
Hydrobiological Journal, Vol.45, 2009, issue 2
I. B. Zubenko, O. V. Timchenko, P. N. Linnik, A. V. Zubko, L. A. Malinovskaya
Peculiarities of the Distribution of Aluminum among Its Coexisting Forms in Surface Water Bodies of Various Types
Hydrobiological Journal, Vol.46, 2010, issue 2
V. A. Zhezherya, P. N. Linnik
Role of Suspended Matter Fractions Differing in the Size of Their Particles in the Accumulation and Migration of Metals in Lake Systems
Hydrobiological Journal, Vol.55, 2019, issue 6
I. I. Ignatenko, V. A. Zhezherya, P. N. Linnik
Content and Forms of Lead Migration in Surface Waters
Hydrobiological Journal, Vol.53, 2017, issue 1
V. A. Zhezherya, P. N. Linnik