scholarly journals CONCENTRATION OF BIOGENIC TRACE ELEMENTS (Zn, Co, Cr), ALKALINE (Rb, Cs), ALKALINE-EARTH (Sr, Ba) METALS AND LANTHANUM IN THE EUTROPHIC PEAT BOG ECOSYSTEM

2019 ◽  
pp. 337-347
Author(s):  
Ol'ga Aleksandrovna Golubina ◽  
Tat'yana Nikolayevna Tsybukova ◽  
Elena Nikitichna Tveryakova ◽  
Irina Aleksandrovna Perederina ◽  
Galina Aleksandrovna Zholobova ◽  
...  
Keyword(s):  
Trace Elements ◽  
Neutron Activation Analysis ◽  
Alkaline Earth ◽  
Average Concentration ◽  
Peat Bog ◽  
Average Depth ◽  
Botanical Composition ◽  
Rare Metals ◽  
Hydrothermal Conditions ◽  
Tomsk Region

Peats and marsh waters of the peat bog eutrophic ecosystem (Tomsk region) for the content of trace elements have been studied. The peat deposit is composed of lowland peats of grass type predominantly. The deposit average depth is about 3 meters. Samples of several observation points, which differ in botanical composition and hydrothermal conditions of occurrence were analyzed. The concentration of biogenic (Zn, Co, Cr), alkaline (Rb, Cs), alkaline earth (Sr, Ba) and rare earth (Hf, La) metals in peat and marsh waters has been determined by the method of neutron activation analysis. It was shown that the amount of various elements in peat is determined by regional characteristics and botanical composition. From comparative elements concentration analysis, it has been found that concentration of metals varies identically depending on the depth of the peat bog, which indicates typical conditions for the accumulation of these elements. As a result of the research was founded high content of the Ba and Sr in peats of all observation points. It has been established that the peat of native section 3 is enriched with all studied metals Zn, Cr, Sr, Ba in comparison with peats of the first and the second observation points. Besides, under the conditions of this ecosystem cobalt, rubidium and lanthanum were accumulated in peats. The average concentration of trace elements in the studied peat bog ecosystem is comparable to the average values of this region. We have found that samples of marsh water are enriched with the biogenic zinc. Among rare metals, such elements as strontium and barium are the most abundant in marsh water, what correlates with the largest content of Zn, Sr and Ba in the studied peats. Light Rb and Sr ions transfer from peat to swamp waters in greater amount than heavier Cs and Ba ions. Strontium enters and migrates intensively to the swamp waters of all three observation points.

scholarly journals Content of biogenic micro-and macronutrients (Zn, Co, Cr, Na, Ca, Fe) in the eutrophic peat deposit

2020 ◽  
Author(s):  
О.А. ГОЛУБИНА ◽  
И.А. ПЕРЕДЕРИНА ◽  
Е.Н. ТВЕРЯКОВА ◽  
Ю.Ю. МИРОШНИЧЕНКО ◽  
Е.А. КУРЦЕВИЧ ◽  
...  
Keyword(s):  
Trace Elements ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Average Concentration ◽  
Peat Bog ◽  
Botanical Composition ◽  
Tomsk Region ◽  
Bog Waters ◽  
Mode Of Occurrence

Методом нейтронно-активационного анализа охарактеризованы торфы и болотные воды месторождения Таган (Томский район, Томская область) на содержание биогенных макро- (Na, Ca, Fe) и микроэлементов (Zn, Co, Cr). Анализ образцов с нескольких пунктов наблюдений, различающихся по ботаническому составу и гидротермическим условиям залегания, показал, что элементный состав торфов характеризуется региональными особенностями и ботаническим составом. Концентрации элементов по глубинам трех пунктов наблюдений изменяются синхронно, что свидетельствует о типичности условий накопления этих элементов. Среднее содержание микроэлементов в изучаемой торфяно-болотной экосистеме сопоставимо со средними значениями данного региона. The concentration of biogenic macro- (Na, Ca, Fe) and microelements (Zn, Co, Cr) in peat and bog waters of the Tagan Deposit (Tomsk District, Tomsk Region) was determined by neutron activation analysis. Analysis of samples from several observation points which differ in botanic composition and hydrothermal mode of occurrence showed that the amount of various elements in peat is determined by regional characteristics and botanical composition. From comparative elements concentration analysis, it has been found that concentration of elements varies identically depending on the depth of the peat bog, which indicates typical conditions for the accumulation of these elements. The average concentration of trace elements in the studied peat-bog ecosystem is comparable to the average values of this region.

scholarly journals Chemical composition and biological activity of peat deposits of oligotrophic bog

2018 ◽  
Vol 7 (3) ◽  
pp. 82-87
Author(s):  
Ekaterina Vladimirovna Porokhina ◽  
Margarita Alexandrovna Sergeeva ◽  
Olga Alexandrovna Golubina
Keyword(s):  
Ammonium Nitrogen ◽  
Biochemical Properties ◽  
Fungal Mycelium ◽  
Peat Bog ◽  
Botanical Composition ◽  
Peat Deposits ◽  
Tomsk Region ◽  
Relationship Of ◽  
Physical And Chemical ◽  
General Technical

The article presents the results of the main general technical, physical and chemical, microbiological and biochemical properties of the oligotrophic bog (Tomsk Region). It shows that peat oligotrophic bog belong to low-ash (2,3-10,9%), high - acid (2,2-3,6 units of pH), with the degree of decomposition - 20-50%. The authors find that the concentration of ammonium nitrogen increases with depth, and nitrate - decreases. The largest accumulation of mobile connections of phosphorus observed in the upper layer of peat deposits (11,20 mg/100 g dry peat). The maximum population of bacterial was concentrated in the upper layers of the deposit (20,6-22,4 billion cells/g). Spores, mycelium was detected in the fungal biomass only to a depth of 175 cm. The correlation analysis showed a direct relationship of fungal mycelium from the readily hydrolyzable substance (r = 0,84). Catalase activity varies from 0,99 to 7,32 ml O2 / g 2 min in peat bog deposit. The activity of catalase was influenced by the botanical composition The activity of polyphenol oxidase varies in the peat deposit from 0,13 to 6,72 mg of 1,4-benzoquinone / g 30 min, changing unevenly in depth. The limits of peroxidase activity in peat bog were 0,69-26,19 mg 1,4-benzoquinone/g 30 min.

scholarly journals Spatial distribution and potential ecological risk assessment of some trace elements in sediments and grey mangrove (Avicennia marina) along the Arabian Gulf coast, Saudi Arabia

2020 ◽  
Vol 18 (1) ◽  
pp. 77-96
Author(s):  
Hameed Alsamadany ◽  
Hassan S. Al-Zahrani ◽  
El-Metwally M. Selim ◽  
Mohsen M. El-Sherbiny
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Ecological Risk ◽  
Oil Pollution ◽  
Gulf Coast ◽  
Arabian Gulf ◽  
Avicennia Marina ◽  
Potential Ecological Risk ◽  
Average Concentration ◽  
Grey Mangrove

AbstractTo assess trace element concentrations (Zn, Cu, Pb, Cr, Cd and Ni) in the mangrove swamps along the Saudi coast of the Arabian Gulf, thirteen samples of surface sediment and leaves of grey mangrove, Avicennia marina were collected and analyzed. The detected trace element contents (μg g-1) in surface sediments were in the following descending order according to their mean values; Cr (49.18) > Zn (48.48) > Cu (43.06) > Pb (26.61) > Ni (22.88) > Cd (3.21). The results showed that the average concentrations of Cd and Pb exceeded their world average concentration of shale. The geo-accumulation, potential ecological risk and toxicity response indices demonstrated that trace elements have posed a considerable ecological risk, especially Cd. The inter-relationships between physico-chemical characters and trace elements suggests that grained particles of mud represent a noteworthy character in the distribution of trace elements compared to organic materials. Moreover, the results revealed that Zn was clearly bioaccumulated in leaf tissues A. marina. Dredging, landfilling, sewage effluents and oil pollution can be the paramount sources of pollution in the area under investigation.

Determination of trace elements in marine organisms by neutron activation analysis

1980 ◽  
Vol 59 (2) ◽  
pp. 445-451 ◽  
Author(s):  
M. Martić ◽  
N. Ajdacic ◽  
J. Stjepčevic ◽  
M. J. Gašic
Keyword(s):  
Trace Elements ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Marine Organisms

Determination of Trace Elements in Opium by Means of Activation Analysis

1963 ◽  
Vol 1 (3) ◽  
Author(s):  
Alexis C. Pappas ◽  
Jorolf Alstad ◽  
Gulbrand Lunde
Keyword(s):  
Trace Elements ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Rare Earths ◽  
Gold Content ◽  
The Individual ◽  
Lanthanide Content ◽  
Different Origin

SummaryMany methods have been advocated for the determination of the origin of opium, but so far no research has been reported on the possibilities of such studies by means of radiochemical methods applied to the opium ash.In the present investigation the gold and lanthanide content in samples of opium ash has been studied using neutron activation analysis. The gold content was found to vary from about 0,5 to 10 ppm and the total rare earths content from about 20 to 150 ppm. Large variations are found in the distribution pattern of the individual rare earths in opium samples from different origin. The results are discussed and indicate that activation analysis may be used to indentify the origin of opium samples.

Neutron activation analysis of major and trace elements in crude petroleum

1995 ◽  
Vol 198 (1) ◽  
pp. 17-22 ◽  
Author(s):  
M. M. Musa ◽  
W. M. Markus ◽  
A. A. Elghondi ◽  
R. H. Etwir ◽  
A. H. Hannan ◽  
...  
Keyword(s):  
Trace Elements ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Major And Trace Elements ◽  
Crude Petroleum
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