26 articles in this issue
Madi Abilev, Ainur Utesheva, Svetlana Batyrbekova, Bulat Kenessov
Main methods of soil treatment used in contamination by 1,1-dimethylhydrazine were considered in this paper. It was noted that during cleaning soils contaminated by propellants the content transformation products of 1,1-dimethylhydrazine is not considered... see more
Bibissara Burkitbayeva, Akmaral Argimbaeva, Gulmira Rakhymbay, Roza Dzhumanova, D. Tukhmetova, Andrey Kurbatov
The electrochemical behavior of indium on glassy carbon electrode in sulfate solution was studied. The influence of various factors (temperature, sweep rate, the hydrodynamic conditions, the concentration of the electrolyte) on the processes of discharge-... see more
M. Dergacheva, N. Gudeleva, K. Leontyeva, K. Urazov, G. Khussurova
The kinetics of nucleation process and growth of the electrodeposited CdS and CdTe nanocrystals for thin-film solar cells has been studied using chronoamperometry method. Comparison of experimental data to theoretical models is carried out. It is establis... see more
Natalya Dolgova, F. Sydykova
The extraction of gold with 336 Alamin and Alkylaniline from hydrochloric acid solutions was studied. Shown that Alamin extracts gold quantitatively in the field of acidity of the aqueuous phase pH=3,0 – ?HCl=3,5 M when used as diluents of kerosene and hi... see more
Kusman Dossumov, Dina Churina, E. Tulibaev
Polioxide granulated catalysts based on transition and rare earth metals for oxidative conversion of xylene by oxygen have been investigated. It was defined the effect of the composition and concentration of the active phase of oxide catalysts: Cu-Mn-Ln; ... see more
F. Kanapieva, Zh. Zhussipbekova, S. Zhumagazy, Kh. Suerbaev
The carboxylation reactions of resorcinol and m-cresol by sodium salt of ethylcarbonic acid were investigated. It was found that carboxylation of resorcinol and m-cresol proceeds regioselectively with formation of b-resorcylic acid and 4-methyl-2-hydroxyb... see more
Maira Kazankapova, Sergey Efremov, Sergey Nechipurenko, Mikhail Nauryzbayev
Relevance of the study of new structural forms of carbon and their properties; as well as existing geological problems of ancient carbon explain relentless scientific interest in shungite carbon of Russia ("Zazhegino" deposit) during the third century. In... see more
Kanagat Kishibayev, O. Protsenko, Sergey Yefremov, Natalia Dolgova, Asset Kabulov, Rustam Tokpayev, ?zhar Atchabarova, Sergey Nechipurenko
Activated carbons are widely used in different industries for cleaning a variety of natural objects from of technogenic pollutants. In the article presents the results of physico-chemical investigations of activated carbons. The investigations on the sorp... see more
Jacek Koziel
Simultaneous chemical and sensory analysis with multidimensional gas chromatography-mass spectrometry- olfactometry (mdGC-MS-O) combine classic chromatographic separations with sensory analyses. Trained panelist and human nose is used as a detector ... see more
K. Korzhynbayeva, R. Medetkhan, M. Diaz, S. Tazhibayeva, K. Musabekov
The adsorption of methylene blue dye on the surface of diatomite was studied. Adsorption takes place due to the electrostatic interaction of dye cations and silanolic groups of diatomite. Investigation of the influence of pH on the adsorption efficiency s... see more
Fedor Malchik, K. Tishenko, Svetlana Kalugina, Andrey Kurbatov
Was proposed two potentiometric methods for determining peroxodisulfuric acid during electrolysis of sulfuric acid (potentiometric titration method and direct potentiometry), based on its interaction with a known excess of a solution Fe2+.
A. Mamontov, E. Mamontova, E. Tarasova
The paper presents the review of study results of persistent organic pollutants (polychlorinated dibenzo-para-dioxins (PCDD), dibenzofurans (PCDF), biphenyls (PCB), organochlorine pesticides (DDT, HCH, chlordane, HCB) in air, snow, soil, biota of terrestr... see more
Rema Matakova
This paper considers the gradual development of the nature of the electrode material in accordance with the requirements of electroanalysis. Showed a significant effect on reducing the limit determined by the content of the analyte in the track analysis o... see more
Dina Mendaliyeva, Z. Kunasheva, G. Utepkalieva
The optimal terms for application of molybdenum electrode as an indicatory electrode at the potentiometer measuring were defined. For comparison an industrial platinum electrode was used. Basic electro-analytical properties of electrode in metal salts sol... see more
G. Merkushina, N. Larina
The paper represents the results on working out spectrophotometric procedure for determination of photosynthetic pigments in peat samples of different origin. According to the results of implementation of this technique at conditions of inter-laboratory p... see more
Yerbolat Sailaukhanuly, ?nastassiya Bokareva, ?inur Kazbekova
Determination method of food preservatives sodium benzoate (? 211)and potassium sorbate (? 202) in milk and beverages by high performance liquid chromatogrphy was optimized. Chromatographic separation was performed on a column Zorbax Eclipse XDB-C18 with ... see more
Alexander Sokolov, Oleg Halkin, Kamila Baydagulova, Mikhail Nauryzbaev
The influence of the quantitative ratio of molybdenum and cobalt in the electrolyte on the process of electrolyticcodeposition of these metals in the alloy was investigated. It was established that changing the concentrations of the components greatly inf... see more
G. Sugurbekova, H. Abdullin, D. Urozaev, Rustem Bolat, D. Alimzhanov
Results of studies of microstructure and surface morphology of gallium nitride obtained by chemical vapor deposition (CVD) on silicon and quartz substrates were presented in this paper. Raman spectra, X-ray diffraction and EDAX were studied. Gallium nitri... see more
E. Tarasova, A. Mamontov, E. Mamontova
Research components of trophic status and ionic composition of waters of the Angara cascade reservoirs in spring of 2013 showed that content of these components, as well as trend of the average values along the river due to creation time, place in the cas... see more
O. Civileva, A. Pankratov, I. Kuznetsova, B. Zaitsev, A. Shihabudinov, V. Korolovich
Data of sensitivity of sorption study deep culture isolates of higher shiitake mushroom used as a modifier acoustic biosensor device are presented in paper. The conditions for preparing biomodifier ; leading to a higher sensitivity of the sensor to an aqu... see more
Ainur Utesheva, Meruert Sergazina, Mereke Alimzhanova, Bulat Kenessov
An analytical method for determination of volatile organic compounds (VOCs) in Kazakhstan red wine was developed in this study. The volatile composition of red wine was determined by headspace SPME in combination with GC-MS. The DVB/CAR/PDMS fiber and the... see more
M. Zhamanbaeva, Mariya Abilova, G. Kashkanova, Altynai Mussabekova, Aiman Shaldybaeva
This paper presents the results of spectrophotometric and pH-metric study of Co (II) - malic acid system. Optical density of solutions was determined spectrophotometrically in a wide wavelength range at constant ionic strength and pH values. The compositi... see more
Yelena Zlobina, Lidiya Pak
For extraction of scandium multicomponent solutions obtained binary extractants (BE), based on organic acids (di-2-ethylhexyl-phosphoric acid (D2EHPA), di-2-etylgexyl-ditiophosphoric acid) and organic bases (threealkylbenzilammonium chloride(TABA?H), thre... see more
Jean-Francois Focant, P. Stefanuto, C. Brasseur, J. Dekeirsschieter, E. Haubruge, E. Schotsmans, A. Wilson, S. Stadler, S. Forbes
Comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC×GC-TOFMS) has been used to analyze complex mixtures of volatile organic compounds (VOCs) produced during cadaveric decomposition processes. The use of specific mass spec... see more
A. Batyrbayev, Sergey Rodivilov, B. Myrzakhmetov
Polymer modification of bitumen emulsions obtained from bitumen of domestic production with the use of several commercial emulsifiers was studied. The influence of the polymer modifier concentration on bitumen emulsion physical-mechanical properties was c... see more
T. Krasnenko, T. Sirina, V. Viktorov, M. Rotermel, G. Solovyov
Water is a necessary process for TPP power plant operation. To the power station, in the production of electricity and heat as a result of the preparation of large amounts of water to compensate for losses associated with the release of process steam for ... see more