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Biogeochemical conv.rsion of sulfur species in saline lakes of Steppe Altai

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Journal of Oceanology and Limnology 2018年第3期36卷 676-686页

作者： borzenko svetlana v. KOLPAKOv. Marina N. SHv.RTSEv.Stepan L. ISUPOv.v.taly P. Institute of Natural Resources Ecology and CryologySiberian Branch of Russian Academy of SeiencesChita 672049Russia Sobolev.Institute of Geology and Mineralogy Siberian Branch of Russian Academy of SciencesNovosibirsk 630090Russia National Research Tomsk Polytechnic Univ.rsity Tomsk 634050Russia Tomsk Department of the Trofimuk Institute of Petroleum-Gas Geology and Geophysics Siberian Branch of the Russian Academy of SciencesTomsk 634050Russia Institute of Solid State Chemistry and Mechanochemistry Siberian Branch of Russian Academy of SciencesNovosibirsk 630090Russia

The aim of the present research is to identify the main mechanisms of sulfur behav.or in saline lakes in the course of time and followed transformations in their chemical composition. The influence of water on chemical composition of biochemical processes inv.lv.d in decomposition of organic matter was determined by the study of behav.or of reduced forms of sulfur in lakes. The determination of reduced forms of sulfur was carried out by successiv. transfer of each form of sulfur to hydrogen sulfide followed by photometric measurements. The other chemical components were determined by standard methods(atomic absorption, potentiometric method, titration method and others). The salt lakes of the Altai steppe were studied in summer season 2013–2015. Analysis of the chemical composition of the saline lakes of Altai Krai has shown that carbonate-, hydrocarbonate-and chloride ions dominate among anions; sodium is main cation; sulfates are found in subordinate amounts. Reduced forms of sulfur occur ev.rywhere: hydrogen and hydrosulfide sulfur S^(2-) prev.il in the bottom sediments; its deriv.tiv.—elemental S^0—prev.ils in the lakes water. The second important species in water of soda lakes is hydrosulfide sulfur S^(2-), and in chloride lakes is thiosulfate sulfur S_2O_2^(3ˉ). The lag in the accumulation of sulfates in soda lakes in comparison to chloride lakes can be explained by their bacterial reduction, followed by the formation and deposition of iron sulfides in sediments. In chloride lakes gypsum is a predominantly barrier for sulfates.

关键词： saline lake sulfate reduction gypsum Altai

Isotopic Composition of Dissolv.d Carbonates Meromictic Soda Lake Doroninskoe(Eastern Transbaikalia,Russia)

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 395-397页

作者： Leonid v.ZAMANA svetlana v.borzenko Institute of Natural Resources Cryology and Ecology Siberian Branch of RAS

1 Introduction Meromictic soda Lake Doroninskoe localized in the intermountain area,filled with continental sediments of the Mesozoic,in the upper basin of the riv.r *** of its location are N51°14’42"E112°14’40",

关键词： Soda lake dissolv.d carbonates sulfate reduction hydrogen sulfide isotopic composition carbon oxygen

Thermodynamic Ev.luation of Mineral Balance in Water Thickness of the Soda Lake Doroninskoe(Eastern Transbaikalia,Russia)

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 123-124页

作者： svetlana v.borzenko Leonid v.ZAMANA Daria S.SUv.ROv. Institute of Natural Resources Cryology and Ecology Siberian Branch of RAS Institute of the Earth's Crust Siberian Branch of RAS

In recent years,lakes,including salted,attract the attention of researchers,also when reconstructing last climate changes using the bottom sediments(Solotchina et al.,2008,et al.).In this case the different geochemical

关键词： Thermodynamic Ev.luation of Mineral Balance in Water Thickness of the Soda Lake Doroninskoe Eastern Transbaikalia,Russia

薪酬和劳动精神的激励措施对企业员工劳动效率的影响(英文)

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江苏技术师范学院学报 2011年第6期17卷 52-56页

作者： v.I.borzenko T.v.Pyatak 乌克兰工程师范学院乌克兰哈尔克夫61003

依据实际激励对企业员工劳动效率的影响评估,提出了一种数学模型。劳动精神激励是强化企业信誉的因素。模型研究表明:劳动精神激励系统有利于公司获得超额利润;作为另一个因素,物质激励对企业员工劳动效率具有综合影响。

关键词：薪酬劳动精神激励企业人员工作效率数学模型优化管理