72 research outputs found
Soil cover of the north-eastern part of the Chernokhora Mts. (Ukraine)
Soil cover in the investigated area of the Chernokhora Mts. is characterized by
shallow soil profile containing a lot of unweathering crumbs of sandstone and specific
character of organic matter. It is a result of very hard bedrock (especially sandstones),
intensive morfphogenetic processes and very humid and cold climate. Under beech and
spruce forests Dystric Cambisols and Cambic Leptosols prevail. In subalpine and alpine
areas Umbric Leptosols, Lithic Leptosols and Dystric Regosols occur. The Pulmonario-
Alnetum viridis vegetation occur on Hapli-Eutric Gleysols enriched by waters migrating
among rocks
Sorption of and Pb on sediment samples from a drinking water reservoir
This study focused on 137Cs and Pb accumulation in sediments from the Dobczyce Reservoir in southern
Poland. Elements’ spatial distribution as well as their distribution in sediment core samples were analyzed.
The conditions of cesium and lead desorption were also investigated. The distribution coefficient for 137Cs
(KCs) was obtained using a radiometric determination in combination with static ion-exchange chromatography.
Determination of the distribution coefficient for Pb (KPb) was performed by means of atomic absorption
spectrometry (electrothermal technique). The experiments were carried out considering various concentrations
of potassium and calcium ions (from 5·10-3 to 10-5 mol·dm-3 by addition of KNO3 and Ca(NO3)2, respectively).
It was found that:
a) spatial distribution of anthropogenic 137Cs and Pb in the sediments of the Dobczyce Reservoir results
mainly from hydrological conditions of the sedimentation process and, on the other hand, from the
sorptive properties of the deposited material
b) in the case of 137Cs sorption, a pronounced competitive effect was noted for K ions; much less effect
was found for Ca.
On the contrary, in the case of lead such a competitive effect was visible for Ca, much less for K. The
conditions of 137Cs desorption from the sediments caused by K and Ca ions present in water were estimated
Lithic Leptosols in the subalpine and alpine meadows (poloninas) in the Bieszczady Mts and Chornokhora Mts (Eastern Carpathians)
Characteristics of the Bieszczady Mts. and Chornokhora Mts. soils at the primary
stadium of development (Lithic Leptosols) has been described. These soils are very shallow
formations with profile consisting of a few centimetre of 0fh mor/moder type organic
matter horizon situated directly on the weathered rock (R) or on the thick-grained regolith.
The organic matter is in the primary stadium of humification, its reaction is very acidic
(pH 3,5-4,0) and the fulvic acids prevail within the humus substance fractions. In some
cases ratio 1:1 between fulvic and humic acids can be observed
Concentrations of , radionuclides and some heavy metals in soil samples of Chochołowska Valley from Tatra National Park
This paper presents the results of determination of artificial and natural activity concentrations
and some heavy metals in soil samples from the region of one of the main valleys of Tatra National Park
(Chochołowska). Our investigation concentrated on and heavy metal levels in mountain soil taken
from Chochołowska Valley, which revealed great variability in their concentration. The results show considerably
small amounts of radionuclides and in the soils. Larger amounts of those elements can
be found in the organic surface horizons of the soils. The evaluation of the content of those elements must
be based on the bulk density analysis of the soil
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