METHODOLOGICAL APPROACH TO THE IDENTIFICATION OF THE SOURCES AND GENESIS OF BURIED ORGANIC MATTER IN HOLOCENE SECTIONS OF LAKE SAPROPELS (southern West Siberia and eastern Baikal area)

2019 ◽  
Keyword(s):  
Organic Matter ◽  
Methodological Approach ◽  
West Siberia

Distribution of organic matter in rocks of the Bazhenov horizon ( West Siberia )

2018 ◽  
Vol 59 (3) ◽  
pp. 285-298 ◽  
Author(s):  
A.E. Kontorovich ◽  
E.V. Ponomareva ◽  
L.M. Burshtein ◽  
V.N. Glinskikh ◽  
N.S. Kim ◽  
...  
Keyword(s):  
Organic Matter ◽  
West Siberia ◽  
Bazhenov Horizon

Transformation of soil organic matter in microarthropod community from the northern taiga of west Siberia

2006 ◽  
Vol 33 (1) ◽  
pp. 81-86 ◽  
Author(s):  
V. G. Mordkovich ◽  
O. G. Berezina ◽  
I. I. Lyubechanskii ◽  
V. S. Andrievskii ◽  
I. I. Marchenko
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
West Siberia ◽  
Northern Taiga ◽  
Microarthropod Community

Identifying and quantifying amorphous and crystalline content in complex powdered samples: application to archaeological carbon blacks

2016 ◽  
Vol 49 (2) ◽  
pp. 585-593 ◽  
Author(s):  
Sophie Cersoy ◽  
Pauline Martinetto ◽  
Pierre Bordet ◽  
Jean Louis Hodeau ◽  
Elsa Van Elslande ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Organic Matter ◽  
Carbon Black ◽  
Methodological Approach ◽  
Mixed Phase ◽  
Carbon Blacks ◽  
Heterogeneous Samples ◽  
Scanning Electron ◽  
Black Materials

Carbon black materials have been frequently used from prehistory as pigments for drawings and paintings and also as dyes, inks and cosmetics, since they are easy to make by burning organic matter. However, the carbonaceous phases they form are often ill-ordered and not easy to characterize. Five carbon black Roman micro samples found in vessels in houses in Pompeii were studied. These precious powders correspond to mixed phase samples that contain both crystalline and ill-ordered components. Here, a methodological approach that accomplishes the identification, quantification and mapping of the different phases in these heterogeneous samples using synchrotron-based techniques is proposed. The results were compared with those from scanning electron microscopy. Information about the nature of the mixtures and the origin of carbon black pigments is obtained. The use of charred vegetable materials is concluded, independently of the shape and the nature of the container.

Geochemistry of resins in dispersed organic matter and oils of West Siberia

2008 ◽  
Vol 420 (1) ◽  
pp. 664-666 ◽  
Author(s):  
L. S. Borisova ◽  
A. E. Kontorovich
Keyword(s):  
Organic Matter ◽  
West Siberia

Biomarker hydrocarbons in the organic matter of Paleogene sediments in southern West Siberia

2008 ◽  
Vol 48 (4) ◽  
pp. 269-276 ◽  
Author(s):  
V. A. Kashirtsev ◽  
A. E. Kontorovich ◽  
V. I. Moskvin ◽  
A. Yu. Kuchkina ◽  
V. E. Kim
Keyword(s):  
Organic Matter ◽  
West Siberia ◽  
Biomarker Hydrocarbons

Geochemical technique of organic matter research in deposits enrich in kerogene (the Bazhenov Formation, West Siberia)

2015 ◽  
Vol 70 (6) ◽  
pp. 409-418 ◽  
Author(s):  
E. V. Kozlova ◽  
N. P. Fadeeva ◽  
G. A. Kalmykov ◽  
N. S. Balushkina ◽  
N. V. Pronina ◽  
...  
Keyword(s):  
Organic Matter ◽  
West Siberia ◽  
Bazhenov Formation

scholarly journals Methodological aspects of determining the processes of organic matter mineralization↔synthesis in croplands

2019 ◽  
Vol 6 (1) ◽  
pp. 3-9 ◽  
Author(s):  
V. Volkohon ◽  
O. Pyrig ◽  
K. Volkohon ◽  
S. Dimova
Keyword(s):  
Organic Matter ◽  
Organic Material ◽  
Agricultural Soils ◽  
Spring Barley ◽  
Methodological Approach ◽  
Control Level ◽  
Mineral Fertilizers ◽  
Mineral Fertilization ◽  
Positive Ratio ◽  
Fertilization System

Aim. To determine the peculiarities of N[2]O and CO[2] soil emissions under different systems of crop fertilization. Methods. Field experiment, gas chromatography. Results. The data obtained during the permanent fi eld experiment on leached chernozem with crop rotation including potatoes, spring barley, peas and winter wheat have shown that both absolute (N[2]O) and specifi c (relative to carbon losses in the form of СО[2] ) losses of nitrogen depend on crop fertilization system. The introduction of raw organic material to the soil in the form of cattle manure or lupine (green manure) has led to the increased CO[2] emission levels. However, specifi c nitrogen losses in the form of N[2]O (g N-N[2]O/kg C-CO[2] ) have remained at the control level. The application of mineral fertilizers (under the absence of raw organic material) have triggered N[2]O emissions and more intense production of CO[2] (up to 67 % in the variant with the highest dose of mineral fertilizers (N[120]P[120]K[120] kg/ha of active ingredient), which can be caused by the mineralization of humus compounds. In organo-mineral fertilization system the specifi c losses of nitrous oxide have not exceeded the control and fallow. Based on the obtained results the authors propose the method of determining the “mineralization-synthesis” indices of organic matter in agricultural soils for estimation of the orientation of biological processes under different crop growing conditions. Conclusions. Systemic application of mineral fertilizers without introduction of raw organic material leads to the misbalance of mineralization and synthesis processes in soils. Under such conditions the mineralization of organic matter is prevailing. The use of organic and organo-mineral fertilizers has balanced these processes in the soil. The proposed methodological approach for determination of mineralization-synthesis indices is based on the emission ratio of g N-N[2]O/kg C-СО[2] compared to the reference values and can provide an objective view of the tendency of mineralization (negative ratio values) and synthesis (positive ratio values) processes in the soils. It provides grounds to the decision-making principles of agricultural crops fertilization or introduction of certain agronomic techniques.

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