scholarly journals ISTOPIC COMPOSITION (H, O AND C) OF NATURAL WATERS OF THE NOVOSIBIRSK CITY AGLOMERATION

2021 ◽  
Vol 2 (1) ◽  
pp. 149-159
Author(s):  
Dmitry A. Novikov ◽  
Aleksandr N. Pyrayev ◽  
Fedor F. Dultsev ◽  
Anatoliy V. Chernykh ◽  
Anna F. Sukhorukova ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Isotopic Composition ◽  
Natural Waters ◽  
Regional Distribution ◽  
Urban Agglomeration ◽  
Carbonate Weathering ◽  
Dissolved Carbon ◽  
Natural Surface ◽  
Dissolved Carbon Dioxide ◽  
Silicate Carbonate

The paper presents the first data on the regional distribution of the isotopic composition of oxygen and hydrogen in waters, as well as the carbon of water-dissolved carbon dioxide in natural surface and underground infiltration waters of the Novosibirsk urban agglomeration. For the presented sample of samples, the vector of changes in the values of δD and δO in the studied region was obtained from -112 to -126 ‰ and from -14 to -16 ‰, respectively. The water-dissolved carbon dioxide of the studied waters has the expected biogenic genesis, the isotopic composition of carbon (δC from -14.0 to -7.0 ‰) indicates its participation in the processes of silicate-carbonate weathering.

scholarly journals FORMATION CONDITIONS OF GROUNDWATER OF THE UPPER JURASSIC OF THE CENTRAL REGIONS OF THE ZAURAL MEGAMONOCLYSIS

2021 ◽  
Vol 2 (1) ◽  
pp. 181-190
Author(s):  
Dmitry A. Novikov ◽  
Aleksandr N. Pyrayev ◽  
Fedor F. Dultsev ◽  
Anatoliy V. Chernykh ◽  
Svetlana V. Bakustina ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Isotopic Composition ◽  
Upper Jurassic ◽  
Biogenic Origin ◽  
Dissolved Carbon ◽  
Dissolved Carbon Dioxide ◽  
Oxygen And Hydrogen Isotopes ◽  
Central Regions ◽  
First Results ◽  
Formation Conditions

The article presents the first results of complex isotope-hydrogeochemical studies of reservoir waters of the Upper Jurassic deposits of the central regions of the Zaural megamonoclysis. It was shown that most waters have a narrow distribution of oxygen and hydrogen isotopes (δD from -103.2 to -85.6 ‰ and δO from -15.4 to -12.9 ‰). Some of them have pronounced excursions on the isotopic composition, which indicates a difference in their genesis: from condensate to mixed with ancient infiltrogenic. The isotopic composition of carbon of water-dissolved carbon dioxide (δС from -41.6 to -16.3 ‰) indicates its biogenic origin and the possibility of interstratal flows from overlying horizons.

The Carbon System and Several Useful Procedures

1991 ◽  
Author(s):  
James C. G. Walker
Keyword(s):  
Carbon Dioxide ◽  
Natural Waters ◽  
Small Computer ◽  
Dissolved Carbon ◽  
Bicarbonate Ions ◽  
Dissolved Carbon Dioxide ◽  
Equilibrium Relationships ◽  
Definition Of ◽  
Fast Chemical ◽  
Carbon System

The routines developed in previous chapters can be used to simulate a variety of interesting systems in geochemical dynamics and global change. In addition to these routines are devices and procedures that can make easier the process of developing and debugging a simulation. I shall present several such procedures in this chapter, including the management of input and output files, particularly files of starting values, the definition of mnemonic names for variables, a graphic subroutine that provides a runtime view of the progress of a calculation, and the specification of complicated histories by means of a table. These are procedures that I find helpful, but because working with a small computer is a personal matter, you may not find them helpful. By all means, develop your own procedures or modify mine. As an application of these computational helpers I shall also introduce the carbon system and the equilibrium relationships among the species of carbon dissolved in natural waters. Carbon dioxide plays a key role in climate, in biological processes, in weathering reactions, and in marine chemistry. I shall next describe how the partial pressure of this gas in the atmosphere may be calculated. Because there is a rapid exchange of carbon dioxide between ocean and atmosphere, we must consider the fate of dissolved carbon. Carbon dissolved in seawater takes part in fast chemical reactions involving the species dissolved carbon dioxide H2CO3, bicarbonate ions HCO-3, and carbonate ions CO=3. The concentrations of these species are governed by equilibrium relationships (Broecker and Peng, 1982).

Impact of Dursban and Abate on Microbial Numbers and Some Chemical Properties of Standing Ponds

1975 ◽  
Vol 10 (1) ◽  
pp. 33-41 ◽  
Author(s):  
J. Butcher ◽  
M. Boyer ◽  
CD. Fowle
Keyword(s):  
Carbon Dioxide ◽  
Active Ingredient ◽  
Algal Blooms ◽  
Chemical Properties ◽  
Total Carbon ◽  
Dissolved Carbon ◽  
Photosynthetic Productivity ◽  
Dissolved Carbon Dioxide ◽  
Microbial Numbers

Abstract Eleven small ponds, lined with polyethylene, were used to assess the consequences of applications of *DursbanR at 0.004, 0.030, 0.100 and 1.000 ppm and AbateR at 0.025 and 0.100 ppm active ingredient. The treated ponds showed a more pronounced long-term increase in pH and dissolved oxygen and decreasing total and dissolved carbon dioxide in comparison with untreated ponds. Algal blooms were of longer duration in treated ponds than in controls. Total photosynthetic productivity was higher in treated ponds but bacterial numbers did not change significantly. Photosynthetic productivity was estimated by following the changes in total carbon dioxide.

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