Irina V. KonoplevaVernadsky Institute of Geochemistry and Analytical Chemistry · Geochemistry
Irina V. Konopleva
PhD
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30
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Introduction
Additional affiliations
April 2012 - present
Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences
Position
- Senior Researcher
Publications
Publications (30)
The distribution of bicyclic sesquiterpanes in crude oils was studied to assess the applicability of the sesquiterpane ratios as maturity parameters. A total ten crude oils generated in Miocene-Paleogene deposits were analysed by GC-MS technique. The sampling area is located within the Kamchatka Peninsula and the south-east of Chukotka, the Russian...
Методом газовой хромато-масс-спектрометрии изучены состав и относительное содержание бициклических сесквитерпанов состава С14-С16 в нефтепроявлениях термальных источников кальдеры влк. Узон. Показано, что в составе нефти преобладают С16 гомодриманы, содержание С15 дриманов незначительно, С14 нордриманы присутствуют в следовых количествах. Обнаружен...
The composition and relative content of C 14-C 16 bicyclic sesquiterpanes in oil seeps from thermal springs of the Uzon caldera have been studied by GC-MS technique. It is shown that C 16 homodrimanes prevail in oil composition, whereas C 15 drimane content is insignificant, and C 14 nordrimanes are present in trace amounts. Homodrimane with biolog...
The vertical distribution of ¹³⁷Cs in peat bog soils in the remote period after the Chernobyl Nuclear Power Plant accident (ChNPP, 1986) was investigated. The study was conducted on bog meadows in the Bryansk region of Russia. Soil samples were taken at 4 locations: 2 sites on lowland bogs and 2 sites on transitional bogs. Fifteen years after the a...
The natural soil-forming process is currently significantly impacted by human activities. Intense agricultural production intensifies the weathering and transformation processes of soil clay minerals, which were inherited from rocks and contain much potassium available to plants. A positive balance of vermiculite is a reliable diagnostic criterion...
В настоящее время важнейшей особенностью почвообразования является воздействие человека на естественный почвообразовательный процесс. При интенсивном ведении агропроизводства активно протекают процессы выветривания и трансформации глинистых минералов, унаследованных от
породы, в которых содержатся основные запасы доступного растениям калия. Надежны...
Методами газовой хроматографии и газовой хромато-масс-спектрометрии исследованы нефти изскважин и источников Восточно-Камчатского прогиба. По составу и распределению молекул-био-маркеров установлено три группы нефтей, различающихся составом исходного органического ве-щества, литофациальными условиями осадконакопления и степенью катагенетического пр...
Gas chromatography and gas chromatography–mass spectrometry data on oils from wells and seeps in the Eastern Kamchatka Basin indicate that, according to their composition and the distributions of biomarker molecules, these oils can be classified into three groups, which differ in the composition of the parent organic matter, litho–facies sedimentat...
2016. Т. 16. № 4 280 УДК 550.41: 621.039.735 Селективная сорбция радиоцезия сорбентами на основе природных глин Kоноплева И.В. ФГБУН «Институт геохимии и аналитической химии им. В. И. Вернадского РАН» (ГЕОХИ РАН), Москва Поступила в редакцию 30.05.2016 г. В статье рассмотрены современные представления о механизмах селективной сорбции ра-диоцезия в...
The isotope and hydrocarbon compositions of oil seeps in the caldera of Uzon Volcano were investigated. An experiment was conducted to simulate the thermal hydrolysis of biota in the hot springs of the caldera, which is considered as a source of carbon for the oil seeps. The same methods were applied to investigate petroleum condensate and thermal...
In the mechanisms of action of various adverse factors on mammals a special part is assigned to the regulatory systems. The main regulatory system of cellular metabolism is the cAMP system. Exposure of animals to external γ-radiation results in the modification of different biochemical processes in cells. In studying diversified intercellular disor...
Fertilization with 2.5t/ha limestone: (83% CaCO(3), 8% MgO, 6% K(2)O, 3% P(2)O(5)) reduces the (137)Cs transfer from spruce forest soil into plants like fern (Dryopteris carthusiana) and blackberry (Rubus fruticosus) by a factor of 2-5 during at least 11 years as measured by the aggregated transfer factor T(ag). In 1997 and 2006 these results were...
To give a quantitative description of the radiocaesium soil-plant transfer for fern (Dryopteris carthusiana) and blackberry (Rubus fruticosus), physical and chemical properties of soils in spruce and mixed forest stands were investigated. Of special interest was the selective sorption of radiocaesium, which was determined by measuring the Radiocaes...
Parameters related to 90Sr mobility in the soil-plant system are reported: exchangeable content, selectivity coefficient, and transfer factor. Large mobility of 90Sr in different soil types was shown. The fraction of exchangeable 90Sr varied between 70 and 90%. The selectivity coefficient K(C)(90Sr/Ca) values were in the range 1.3-2.5. The radionuc...
137Cs vertical migration in boggy soils has been studied 15 years after the Chernobyl accident. The rate of vertical migration of the radionuclide is shown to be dependent on the peculiarities of formation of peatbogs, their moistening regime and soil properties. 137Cs migration in a high-land peatbog is characterized by higher intensity then in lo...
The plasma membrane permeability for Ca2+ ions and the activity of adenylate cyclase were evaluated in erythrocytes, lymphocytes, neutrophils and thrombocytes of the peripheral blood of sheep after low dose irradiation. Chronic irradiation of sheep with doses of 6 and 30 cGy was characterized by the modification of the adenylatecyclase activity and...
A method for quantitative assessment of 137Cs availability to plants in forest ecosystems on the basis of soil properties has been developed. It is shown that the experimental dependencies of 137Cs soil-to-plant transfer factor (TFag) for fern and bilberry on the bioavailability factor calculated on the basis of soil characteristics of root layer:...
The methodology for estimating radiocaesium distribution between solid and liquid phases in lakes is applied for three prealpine lakes: Lake Constance (Germany), Lake Lugano (Switzerland) and Lake Vorsee (Germany). It is based on use of the exchangeable distribution coefficient and application of the exchangeable radiocaesium interception potential...
A method for quantitative characterisation of the radiocaesium availability to plants in forest ecosystems has been developed. For this purpose an expression has been proposed to calculate the radiocaesium availability factor in soils, which is a combination of key soil characteristics: radiocaesium exchangeability, exchangeable calcium in soil and...
We experimentally determined the capacity for cesium fixation on selective sorption sites ([FES] and [HAS]) and the radiocesium interception potential (RIP). These characteristics of selective radiocesium sorption on soils and bottom sediments enable the radiocesium partition in the soil-water system to be predicted. Nonselective surface sorption s...
We experimentally determined the capacity for cesium fixation on selective sorption sites ([FES] and [HAS]) and the radiocesium interception potential (RIP). These characteristics of selective radiocesium sorption on soils and bottom sediments enable the radiocesium partition in the soil-water system to be predicted. Nonselective surface sorption s...
The experience of radiation accidents, the Chernobyl accident in the first place, has shown that the methodology used to develop and estimate the effectiveness of countermeasures to reduce negative consequences of accidental contamination of the environment by radionuclides does not meet the requirements of fast response in case of an emergency. In...
Enhancing stimulation effect of prostaglandin E1 on adenylate cyclase, decrease in basal activity of adenylate cyclase in platelets and reducing thyroxine concentration in sow plasma 5 years after radioiodine damage to thyroid gland with doses higher that 200 Gy were detected, whereas only decrease in adenylate cyclase activity in platelets from an...
Enhancing stimulation effect of prostaglandin E1 on adenylate cyclase, decrease in basal activity of adenylate cyclase in platelets and reducing thyroxine concentration in cow plasma 5 years after radioiodine damage to thyroid gland with doses higher than 200 Gy were detected, whereas only decrease in adenylate cyclase activity in platelets from an...
It was found that the total Ca content in erythrocytes from irradiated sheep and horses increased by 10-40% from 1st till 5th days after irradiation, the intracellular Mg content being unchanged. More than 2-fold increase in total Ca content in lymphocytes during first 15 days was revealed, while in platelets only a trend for a growth in acute peri...
The immunoreactive calmodulin content was shown to increase in the irradiated platelets of rats and cows. Total Ca content did not vary significantly in platelets of exposed animals although there was a tendency toward its increase. At the same time, total Ca content in lymphocytes of irradiated cows increased while the immunoreactive calmodulin le...
