Temat: bottom - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Szczecin Lagoon - A single or multiple biotopes?
Autorzy:: Poleszczuk, G.
Powiązania:: https://bibliotekanauki.pl/articles/84803.pdf
Data publikacji:: 2000
Wydawca:: Akademia Pomorska w Słupsku
Tematy:: Szczecin Lagoon
biotope
hydrological regime
bottom morphology
bottom sediment
salinity
ecosystem
biocenosis
Źródło:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2000, 04
1643-0115
Pojawia się w:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Badania płytkich zbiorników wodnych za pomocą metody GPR
GPR investigation of shallow water reservoirs
Autorzy:: Karczewski, J.
Ziętek, J.
Powiązania:: https://bibliotekanauki.pl/articles/183610.pdf
Data publikacji:: 2009
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: GPS
metoda georadarowa
sub-bottom profiler
osady denne
GPR
bottom sediment
Opis:: In the paper, the applicability of the GPR method for shallow depths investigations is presented. Factors which have essential influence on GPR measurements quality are shown. Measurement techniques used in such investigations are discussed with special regard to GPS application. Results obtained for different reservoirs are shown. To compare, results from sub-bottom profiler are included.
Źródło:: Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2009, 35, 2/1; 437-443
0138-0974
Pojawia się w:: Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Macrophytes as Ełk River Quality Status Evaluation Indicators Based on Example of Nickel
Autorzy:: Skorbiłowicz, E.
Skorbiłowicz, M.
Zamojska, E.
Ofman, P.
Wójtowicz, P.
Powiązania:: https://bibliotekanauki.pl/articles/123062.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: river
nickel
bottom sediment
macrophytes
Opis:: The aim of the study was to analyze the content of Ni in fractions of 1.0–0.2 mm, 0.2–0.1 mm, 0.1–0.063 mm, 0.063–0.02 mm, and <0.02 mm of river bottom sediments and plants (root, stem, leaf) of broadleaf cattail (Typha latifolia), yellow water lilies (Nuphar lutea), and cowbane (Cicuta virosa). Nickel content in bottom sediment was slightly higher than the geochemical background. The largest amounts of Ni were associated with the finest fraction, while the smallest with the thickest fraction. The highest content of this element was recorded at the point Ełk Barany, which was connected with developing industry in the city of Ełk. All of the tested plants showed greater Ni contents than the amount naturally occurring in plants. In most cases, most of Ni was associated with plant roots, and the least with leaves. It has been proven that aquatic plants can be good indicators of the aquatic environment status.
Źródło:: Journal of Ecological Engineering; 2016, 17, 3; 155-160
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The possibilities of the environmental use of bottom sediments from the silted inlet zone of the Rożnów Reservoir
Autorzy:: Tarnawski, M.
Baran, A.
Koniarz, T.
Wyrębek, M.
Grela, J.
Piszczek, M.
Koroluk, A.
Powiązania:: https://bibliotekanauki.pl/articles/184430.pdf
Data publikacji:: 2017
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: bottom sediment
environmental purposes
chemical properties
Opis:: The aim of the study was to assess the properties of bottom sediments from the inlet zone of the Rożnów Reservoir (South Poland) and to analyse the potential possibilities to use them for environmental purposes. The inlet zone of the reservoir is particularly intensely shallowed by means of the silts of the Dunajec River. A total of 20 samples were collected from the designated cross-sections. In air-dry samples of the sediments, granulometric composition, pH electrolytic conductivity (EC), sorption properties, organic carbon carbonates and macroelements content were determined. Bottom sediments from the Rożnów Reservoir indicate a great potential possibility to use them for environmental purposes (agriculture, reclamation). However, in order to fully evaluate the possibility of bottom sediment management, it is necessary to carry out an analysis of the ecological risk related to the content of heavy metals, PAHs, PCBs and to evaluate their eco-toxicity. Moreover, the main barriers to the environmental application of bottom sediments are a lack of appropriate legislation.
Źródło:: Geology, Geophysics and Environment; 2017, 43, 4; 335-344
2299-8004
2353-0790
Pojawia się w:: Geology, Geophysics and Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Assessment of heavy metals contents in bottom sediments of Bug river
Autorzy:: Skorbiłowicz, E
Powiązania:: https://bibliotekanauki.pl/articles/123129.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Bug river
bottom sediment
heavy metals
Opis:: The development of industry, agriculture, and transport contributes to an increased environmental pollution by heavy metals. The aim of the study was preliminary assessment of the contents of selected metals (lead, cobalt, copper, chromium, cadmium and nickel) in the sediments of Bug river. The study comprised part of the river flowing through Poland. It was found that the Bug river sediments are not contaminated in respect to the content of tested metals. Based on the analysis of the study results, these metals can be lined up in the following order: Cr > Pb > Cu > Ni > Co > Cd. Statistical analysis showed that copper and chromium occur in Bug river sediments in forms bindings with organic matter in majority of cases. The granulometric analysis of sediments from Bug river revealed the largest percentage of two fractions: 1.0–0.2 mm with average of 47.7 ± 19.77% and 0.2–0.1 mm with average of 20.6 ± 7.7%. These are the dominant fractions with the accumulation of metals in river sediments, which has been confirmed by statistical analysis.
Źródło:: Journal of Ecological Engineering; 2014, 15, 3; 82-89
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The application of the germination index in the assessment of the phytotoxicity of bottom sediments from the Rybnik Reservoir
Autorzy:: Szara, M.
Baran, A.
Tarnawski, M.
Koniarz, T.
Powiązania:: https://bibliotekanauki.pl/articles/184221.pdf
Data publikacji:: 2017
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: bottom sediment
phytotoxicity
germination index
Phytotoxkit
Opis:: The aims of the study were to assess the phytoxicity of bottom sediments collected from the Rybnik Reservoir. The water reservoir in Rybnik is located in the Silesian Voivodeship. The reservoir constitutes a part of the technological chain of Elektrownia Rybnik S.A. as a direct receiver of industrial and rainwater sewage, sewage from a water treatment plant, blowdowns from cooling towers, and as an essential source of cooling water. Sediment samples were collected with an Eckman sampler from 33 locations. The toxicity of bottom sediments was determined using the Phytotoxkit direct contact test, carried out for 3 plants: Sorghum saccharatum, Sinapis alba and Lepidium sativum. On the basis of the data received, the germination index (GI) was calculated. We found the mean value of the germination index indicated the dominance of the inhibitory effect of bottom sediments on plant growth. Sorghum saccharatum was the most sensitive to pollutants in sediments, while Lepidium sativum was the least sensitive. The Phytotoxkit is a good tool for assessing the toxicity of bottom sediments.
Źródło:: Geology, Geophysics and Environment; 2017, 43, 4; 327-333
2299-8004
2353-0790
Pojawia się w:: Geology, Geophysics and Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Microflora of the selected water reservoirs in Swietokrzyskie Voivodship
Autorzy:: Adamus-Bialek, Wioletta
Karwacka, Karolina
Bak, Lukasz
Powiązania:: https://bibliotekanauki.pl/articles/1039467.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: epidemiological analysis
water
bottom sediment
water reservoirs
Opis:: One of the important environmental issues is the quality of surface waters in the world. Poland belongs to countries with a low quality of the inland waters. The sanitary condition of the five water reservoirs of south-east Poland was analyzed. Water and sediment samples were incubated on the selective and/or differential media. High concentrations of many common and pathogenic microbial indicators were shown in those samples. Those reservoirs are used by people, especially during summer. Because of the high epidemiological risk, detailed analysis of all inland waters should be performed routinely.
Źródło:: Acta Biochimica Polonica; 2013, 60, 4; 689-693
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Bottom Deposits of Stratified, Seepage, Urban Lake (On the Example of Tyrsko Lake, Poland) as a Factor Potentially Shaping Lake Water Quality
Autorzy:: Augustyniak, R.
Neugebauer, M.
Kowalska, J.
Szymański, D.
Wiśniewski, G.
Filipkowska, Z.
Grochowska, J.
Łopata, M.
Parszuto, K.
Tandyrak, R.
Powiązania:: https://bibliotekanauki.pl/articles/125198.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: urban lake
phosphorus
bottom sediment
internal loading
Opis:: The object of the study was Tyrsko Lake (area 18.6 ha, max. depth 30.4 m), located in the western part of Olsztyn (Olsztyn Lakeland). This lake is one of the clear water lakes in Olsztyn, but the progressive deterioration of water quality has been observed during recent years. The phosphorus concentration in the water-sediment interface, phosphorus fractions quantity and the amount of components which can bind this element was investigated in the upper (0–5 cm) layer of deposits. The aim of study was to analyze the potential influence of bottom sediment on the lake water quality. The obtained results revealed that the bottom sediment of Tyrsko Lake can be classified as mixed, silica-organic type, with a relatively high content of iron (over 4% Fe in d.w.). The total phosphorus content was ca. 3.5 mg P g,^-1 d.w. on average. Phosphorus in the bottom sediment was bound mainly with organic matter (NaOH-nrP fraction), which had over 50% share in TP. Highly mobile fractions (NH₄-Cl-P and BD-P) together only included ca. 5% to 7% TP. The obtained results show that the bottom sediment of Tyrsko Lake can bind phosphorus quite effectively. The calculated internal mineral phosphorus loading during summer stagnation period was 10.9 kg and it was lower that the assessed annual external phosphorus load (22.6 kg). The assessed annual phosphorus loading from both sources was still lower than the critical load according to Vollenweider criteria. However, due to the fact that the internal loading phenomenon is occurring in the lake, it should be taken into consideration that the lake water quality can deteriorate gradually during the longer time perspective. These findings should be accounted for in the future if the potential protection and restoration procedures will be developed.
Źródło:: Journal of Ecological Engineering; 2017, 18, 5; 55-62
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Environmental and Geochemical Parameters of Bottom-Sediment from the Southern Bug Estuary
Autorzy:: Mitryasova, Olena
Koszelnik, Piotr
Gruca-Rokosz, Renata
Smyrnov, Victor
Smyrnova, Svitlana
Kida, Małgorzata
Ziembowicz, Sabina
Bezsonov, Yevhen
Mats, Andrii
Powiązania:: https://bibliotekanauki.pl/articles/1839119.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: heavy metals
hydroecosystem
bottom sediment
water resource
Opis:: The bottom sediments of river hydroecosystems were studied for the gross content of heavy metals (K, Ti Cr, Fe, Ni, Cu, Zn, Rb, Sr and Hg). The environmental and geochemical processes of bottom-sediment formation in aqua landscapes were analyzed, allowing us to stress the need to determine the methodological basis for the correlation-regression dependence of the heavy metal accumulation processes in bottom sediments, as well as total content of organic carbon. The ranking of pairwise correlation coefficients arranged in decreasing order is: TOC:Cu (0.87) >TOC:K (0.82) >TOC: Ni (0.75) > TOC:Sr (0.73) > TOC:Fe, (0.7) >TOC:Ti (0.67) > TOC:Hg (0.63) > TOC: Cr (0.58) >TOC:Rb (0.56) > and TOC:Zn (0.51). The proposed methodological approach determines the environmental and geochemical aspects of the sedimentation processes heavy metals, while also identifying the general trends in hydroecosystems prone to the anthropogenic impact.
Źródło:: Journal of Ecological Engineering; 2021, 22, 2; 244-255
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Zinc and lead in bottom sediments and aquatic plants in river Narew
Autorzy:: Skorbiłowicz, E.
Powiązania:: https://bibliotekanauki.pl/articles/124796.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: river
bottom sediment
aquatic plants
zinc
lead
Opis:: Aquatic ecosystems are a valuable part of natural environment. The increasing level of pollution in waters transforming biocoenoses and other adverse effects of the impact of toxic substances have contributed to the development of biological monitoring. The aim of the study was to determine the changes in contents of zinc and lead in bottom sediments and roots of aquatic plants: Phragmites australis and Acorus calamus in the river Narew. There were 14 points on the river, from where samples of bottom sediments and plant material were collected. The contents of lead and zinc were determined by means of flame atomic absorption spectrophotometry using Varian device. It was proven that bottom sediments were characterized by low contents of zinc and lead except from two sampling points: in Bondary and Narew. Achieved results of analyzes of plant material showed a slight exceeding in the case of lead. Spatial distribution of zinc and lead contents in examined roots of plants coincided with their contents in bottom sediments, which was also confirmed by statistical analysis. It was proven that aquatic plants had greater tendency for accumulation of metals than bottom sediments.
Źródło:: Journal of Ecological Engineering; 2015, 16, 1; 127-134
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Heavy metals migration in the system: near-bottom water - interstitial water - bottom sediment in Gardno Lake
Migracja metali cięśkich w układzie: woda przydenna - woda iłowa-– osad denny jeziora Gardno
Autorzy:: Trojanowski, J.
Trojanowska, C.
Janczak, C.
Powiązania:: https://bibliotekanauki.pl/articles/84847.pdf
Data publikacji:: 2007
Wydawca:: Akademia Pomorska w Słupsku
Tematy:: heavy metal
metal migration
bottom water
interstitial water
bottom sediment
Lake Gardno
lake
heavy metal concentration
accumulation property
Opis:: The study of heavy metals concentration in the estuarine lake Gardno water and bottom sediments showed that the river Łupawa and periodic inputs of sea water exert decisive influence on forming of the water stores and bottom sediments quality in this lake. The largest concentrations of Cd, Cu, Mn, Pb and Zn were observed at river mouth into the lake region (Cd – 0.26, Cu – 3.71, Mn – 94.3, Pb – 10.01, Zn – 16.26 μg dm-3) and the lowest at water outflow from the lake region (Cd – 0.13, Cu – 1.81, Mn – 53.8, Pb – 8.86, Zn – 8.05 μg dm-3). Average concentrations of those metals in the lake water, suspension and bottom sediment form the following row: Mn>Zn>Pb>Cu>Cd. The contents of analysed metals were the highest in interstitial water, smaller in near-bottom water and the smallest in surface water. Average content of metals in near-bottom suspension was about 30% higher than that in surface suspension, but enrichment factors of those metals in suspensions do not show essential statistic differences. This probably results from continual mixing of water masses by wind. The migration coefficients indicated that bottom sediments of lake Gardno have large accumulation properties of heavy metals.
W latach 2002-2003 przeprowadzono badania nad koncentracją metali ciężkich w wodzie i osadach dennych estuariowego jeziora Gardno. Wykazano, że przepływająca przez to jezioro rzeka Łupawa i okresowe wlewy wody morskiej mają istotny wpływ na zawartość Mn, Zn, Cu, Pb i Cd w wodzie i osadach dennych tego jeziora. Największą koncentrację tych metali obserwowano w rejonie ujścia Łupawy do jeziora (Cd – 0,26, Cu – 3,71, Mn – 94,3, Pb – 10,01 Zn – 16,26 μg dm-3), a najmniejszą w rejonie wypływu tej rzeki z jeziora (Cd – 0,13, Cu – 1,81, Mn – 53,8, Pb – 8,86, Zn – 8,05 μg dm-3). Przeciętna zawartość tych metali w wodzie, zawiesinach i osadzie dennym układała się w następującej kolejności Mn>Zn> Pb>Cu>Cd. Ich stężenia były najwyższe w wodzie iłowej, mniejsze w wodzie przydennej, a najmniejsze w wodzie powierzchniowej. Przeciętna zawartość analizowanych metali w zawiesinie przydennej była o około 30% większa niż w zawiesinie powierzchniowej. Wyznaczone współczynniki wzbogacenia wskazują, że Pb, Zn i Mn w osadach dennych badanego jeziora są głównie pochodzenia antropogenicznego, natomiast Cd pochodzenia naturalnego. Pochodzenie Cu zależne jest od rejonu jeziora. Osady denne jeziora Gardno charakteryzują się dużymi zdolnościami kumulacji metali ciężkich. Dlatego też w tym jeziorze obserwuje się głównie migrację badanych metali z toni wodnej do wody iłowej i osadów dennych. Udział we wzbogacaniu wody przydennej w Pb, Zn i Cu mają zarówno osady denne, jak i opady atmosferyczne. Wiosną i jesienią decydujący wpływ mają opady atmosferyczne, a latem osady denne.
Źródło:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2007, 11
1643-0115
Pojawia się w:: Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The effect of bottom sediment supplement on changes of soil properties and on the chemical composition of plants
Autorzy:: Tarnawski, M.
Baran, A.
Koniarz, T.
Powiązania:: https://bibliotekanauki.pl/articles/184697.pdf
Data publikacji:: 2015
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: bottom sediment
agricultural utilization
soil properties
heavy metals
Opis:: The aim of the study was to assess the effect of bottom sediments on the selected properties of light soil as well as the content of trace elements in tested plants. The bottom sediments collected from the Besko reservoir were added to the soil in an amount of 5%, 10%, 30% and 50% of air-dried sediment, in relation to dry soil mass. The pot experiment was conducted on a light soil, with weak loamy sand grain size composition and slightly acid reaction, which was enriched with a supplement of bottom sediment. The test plant was a maize, Bora c.v. An applied bottom deposit revealed in its composition a considerable content of clay fractions, alkaline reaction and low total heavy metal content. Therefore, it may be applied as an admixture to light soils to improve their productivity. The addition of sediment to light soil resulted in the improvement of acidification in soil indicators: increased soil pH and reduced value of hydrolytic acidity, as well as improved sorption properties. A non-uniform effect of bottom sediment admixture on the content of trace elements in maize was determined. The sediment added to the soil increased the content of copper, nickel, chromium and, decreased the contents of zinc and cadmium in shoots. We did not find any excess of the permissible content of metals in plants used as animals forage in the maize biomass.
Źródło:: Geology, Geophysics and Environment; 2015, 41, 3; 285-292
2299-8004
2353-0790
Pojawia się w:: Geology, Geophysics and Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Total alkaline phosphatase activity in bottom sediments of Rusalka lake in the city of Szczecin
Autorzy:: Daniszewski, P.
Powiązania:: https://bibliotekanauki.pl/articles/411885.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: total alkaline phosphatase activity
bottom sediment
Rusalka lake
Opis:: Have studied lake close to neutral pH 7.75 to 7.62. Aquatic waters are order - phosphorus and nitrogen compounds. Level of activity alkaline phosphatase (APA) has an important impact on the chemical and biological processes taking place in the aquatic environment. APA belongs to a group of indicators, who tells us about the extent limitations to development of biomass in the tank water. Water of Rusalka lake were the subjects of 2008-2012 (July – September). Total alkaline phosphatase activity was determined seven times a year in these environments. A study of seasonal fluctuations showed that a maximum total alkaline phosphatase activity, both in the bottom sediment, occurred in spring (May) and summer (July, August).
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 7, 1; 67-72
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Year over year comparison of sediment quality in the rivers of Eastern Slovakia
Autorzy:: Singovszka, Eva
Balintova, Magdalena
Powiązania:: https://bibliotekanauki.pl/articles/118759.pdf
Data publikacji:: 2020
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: bottom sediment
potential ecological risk assessment
heavy metals
Opis:: Quality is one of the most important risk indicators in river basins. Therefore, monitoring and evaluating water and sediment quality has a very important role in process of risk management. The aim of the monitoring is provide for the sustainability of water bodies and these results are the basis for the risk management in the river catchment area. Hornad, Laborec and Poprad are the rivers in Eastern Slovakia. Hornad and Laborec belongs to basin of Danube and Poprad belongs to basin of Vistula. Sediment sampling was carried out according to ISO 5667-6. Monitoring was carried out in the spring on 2017–2018. The chemical composition of sediments was determined by means of X-ray fluorescence (XRF) using SPECTRO iQ II (Ametek, Germany, 2000). The results of sediment quality evaluated by method PERI revealed that the quality of sediment in 2018 was better than 2017. Results of XRF analysis of sediments were compared with the limited values according to the Slovak Act 188/2003 Coll. of Laws on the application of treated sludge and bottom sediments to fields. It can be state that limit values comparing with Slovak legislation were not exceeding in all sediment samples in rivers in Eastern Slovakia. Based on the monitoring data of sediment quality in the study area, a quantitative analysis of heavy-metal pollution in sediment was conducted using the method of potential ecological risk index (PERI) which is method for evaluate the potential ecological risk of heavy metals. It is based exclusively on chemical parameters of sediments because sediment data show mean integrated values in time, with higher stability than water column parameters; sediments are easily sampled at field work; sediment samples are more representative for time and space scales and analytical data are easily obtained, especially because sediments present high concentrations of contaminants, decreasing the possible errors due to detection limits of the applied analytical method. This method comprehensively considers the synergy, toxic level, concentration of the heavy metals and ecological sensitivity of heavy metals. Potential ecological risk index can be obtained using three basic modules: degree of contamination (CD), toxic-response factor (TR) and potential ecological risk factor (ER). The results show on the basis on potential ecological risk index that the quality of sediment in 2018 is better than 2017. The worst result shows Hornad in 2017. Significant improvement occurred at the sampling point S2 in Hornad in 2018. The best results show Laborec in 2018. The results show on the basis on potential ecological risk index that quality of sediment in 2018 is better than 2017.
Źródło:: Scientific Review Engineering and Environmental Sciences; 2020, 29, 3; 289-297
1732-9353
Pojawia się w:: Scientific Review Engineering and Environmental Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Speciation analysis of phosphorus in bottom sediments - comparison of two methods
Analiza specjacyjna fosforu w osadach dennych - porownanie dwoch metod
Autorzy:: Siwek, H
Powiązania:: https://bibliotekanauki.pl/articles/13856.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: speciation analysis
phosphorus
bottom sediment
comparison
method
fractionation
Opis:: The purpose of this paper was to compare two methods of fractionation of reactive phosphorus forms (RP) in bottom sediments of polymictic water reservoirs located in rural areas. As a criterion for estimation, quantities RP extracted in analyzed fractions versus the general content of Al, Fe and Ca were used. The sediments were collected in springtime, from rural areas with different land use in the drainage basin (arable fields, uncultivated land, farmyards). The sediments were collected with a KC-Denmark core sampler for bottom sediments, which makes it possible to collect samples leaving the upper structure of 6 cm in thickness intact. After mineralization, each sample was analyzed for the general phosphorus content and a speciation analysis was performed by two methods. With the first method (M1), the RP bonded to Al (Al_RP), Fe (Fe_RP) and Ca (Ca_RP) was determined. The second method (M2) was applied to determine fractions of reactive phosphorus released from the sediments under reduced conditions, mainly from bonds with iron and manganese (BD_RP), adsorbed on aluminium oxides mainly AL2O3 and other surfaces (NaOH_RP) and apatite phosphorus and bonds with carbonates. In almost all the sediments, most RP was determined in the phosphorus fractions with Ca extracted with acid solution. For the fractions obtained via the M1 method, more of the general RP, as well as phosphorus bonded to calcium and iron was found than for fractions obtained with the M2 method, and the differences might be attributed to translocation of phosphorus from organic to inorganic compounds during fractioning. The fraction of reactive phosphorus determined with the M1 method is correlated more strongly with the general content of the metal in the sediments than reactive phosphorus fractions determined with the M2 method. The strong correlation between the content of iron and the fraction of BD_RP in mineral sediments shows that it can be an indicator of the sensitivity of sediment to changes in the redox potential.
Celem pracy było porównanie dwóch metod frakcjonowania reaktywnych form fosforu (RP) w osadach dennych polimiktycznych zbiorników wodnych zlokalizowanych na terenach wiejskich. Jako kryterium oceny przyjęto ilość RP wyekstrahowanego w badanych frakcjach w odniesieniu do zawartości ogólnej Al, Fe i Ca. Osady do badań pobrano w sezonie wiosennym, z sześciu oczek wodnych zlokalizowanych na terenach wiejskich o różnym sposobie zagospodarowania zlewni (pola uprawne, odłóg, gospodarstwa rolne). Osady pobierano próbnikiem rdzeniowym osadu dennego KC-Denmark, który umożliwia pobór prób z nienaruszoną strukturą wierzchnią warstwy osadów o grubości 6 cm. W każdym osadzie oznaczono, po mineralizacji, ogólną zawartość fosforu (TP), Fe, Ca, Al oraz przeprowadzono analizę specjacyjną fosforu dwoma metodami. Metodą 1 (M1) oznaczono reaktywny fosfor (RP) związany z: Al (Al_RP), Fe (Fe_RP) i Ca (Ca_RP). Metodą 2 (M2) oznaczono frakcje reaktywnego fosforu uwalnianego z osadów w warunkach zredukowanych głównie z połączeń z tlenkami żelaza i manganu (BD_RP), zaadsorbowanego na tlenkach metali głównie na A2O3 i innych powierzchniach (NaOH_RP), fosfor apatytowy i związany z węglanami (HCl_RP). Prawie we wszystkich osadach najwięcej RP oznaczono we frakcjach fosforu związanego z Ca ekstrahowanego roztworem kwasu. We frakcjach otrzymanych metodą M1 oznaczono większe ilości ogólnego RP oraz fosforu związanego z wapniem i z żelazem niż w metodzie M2, a powstałe różnice mogą wynikać z przemieszczania się fosforu ze związków organicznych do nieorganicznych w trakcie frakcjonowania. Frakcje fosforu reaktywnego oznaczonego metodą M1 są silniej skorelowane z ogólną zawartością tych metali w osadzie niż frakcje fosforu reaktywnego oznaczonego metodą M2. Silna korelacja między zawartością żelaza i frakcji BD_RP w osadach mineralnych wskazuje, że może ona być wskaźnikiem wrażliwości osadu na zmianę potencjału redoks.
Źródło:: Journal of Elementology; 2010, 15, 1; 161-170
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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