DBPapers
DOI: 10.5593/sgem2011/s20.169

THE CHEMICAL AND RADIOCHEMICAL CHARACTERISTIC OF WATER, SOIL AND SEDIMENT SAMPLES OF THE SHU RIVER VALLEY OF SOUTHERN KAZAKHSTAN AND ADJACENT TERRITORY OF KYRGYZSTAN

AUTHOR/S: SH. NAZARKULOVA, I. MATVEYEVA, B. SATYBALDIEV, M. BURKITBAYEV
Monday 1 August 2011 by Libadmin2011

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 3, 669-676 pp

ABSTRACT

At present paper the results of chemical and radiochemical analysis of the
environmental samples collected from the Shu river valley, are shown. The samples
were collected along the Shu river from Tokmak town to Shu town during the field
expedition, conducted in October, 2008, and in July, 2009.

The main ions and uranium decay radionuclides in water increase up to maximum
concentration in Tasotkel reservoir. The biogenic elements analysis showed their typical
concentration for arid zone. The water contaminations with compounds of phosphorus,
silicon, ammonium and nitrate ions are also shown. The activity of uranium isotopes is
lower than the values corresponding to the “The norms of radiation safety” series [1].
The uranium concentration values are changing from 7.9 to 39.2 μg l-1 (Tasotkel
reservoir) along the Shu river. This is in 2.5 times higher than the WHO level (15 μg l-1)
[2]. The concentrations of uranium decay radionuclides are lower than the normative
levels, corresponded by “The norms of radiation safety” series. The calculated value of
effective doses, received from drinking water are near limited levels. The uranium
isotopes is the main dose source.

For chemical characterization of soils and sediments RFA and for mineral composition
of soils and sediments the RPA respectively were done. The main mineral determined
by above methods is quartz, spars, mica, tiff and peach. The levels of uranium and
thorium determined in the soil samples are high. The increased levels of uranium and
thorium are the result of regional specialization of the ores, containing the radioactive
elements. The concentrations of determined isotopes in soils are higher than the
concentrations in the sediments owing to the presence of organogenic component in
them.

Keywords: main ions, biogenic elements, radionuclides, the Shu river valley, effective doses.

PAPER 2011/s20.169: THE CHEMICAL AND RADIOCHEMICAL CHARACTERISTIC OF WATER, SOIL AND SEDIMENT SAMPLES OF THE SHU RIVER VALLEY OF SOUTHERN KAZAKHSTAN AND ADJACENT TERRITORY OF KYRGYZSTAN

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