atomic emission analysis
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2021 ◽  
Vol 25 (4) ◽  
pp. 258-261
Author(s):  
A.V. Behterev ◽  
◽  
V.A. Labusov ◽  
A.N. Putmakov ◽  
◽  
...  

On August 20 of this year, the VMK-Optoelektronika company – a leading Russian developer and manufacturer of spectral analytical equipment – celebrated its 30th anniversary. The company was founded by the team of developers that initially worked in the Spektr temporary inter-institutional collaboration group created in 1988 by the Chairman of the Presidium of the Siberian Branch of the Academy of Sciences Academician V.A. Koptyug to develop multichannel analyzers of optical spectra based on domestic photodiode arrays and operate them at the academic institutes of the Siberian Branch. Over the past period, the company has developed and produced multichannel analyzers of emission spectra (MAES) based on photodetector array assemblies to equip existing spectral instruments in analytical laboratories and create new ones; a wide range of spectrum sources; high-resolution high-aperture spectral devices; atomic emission spectrometers for the analysis of powders, metals, and liquids. Currently, enterprises in Russia and the CIS countries operate: - more than 600 spectral systems for atomic emission analysis developed on the basis of existing spectral devices by replacing photographic plates and photomultipliers with MAES analyzers; many of these systems also include Sharovaya Molniya and Vezuvii electric-arc and spark-discharge generators, Globula and Kristall spectroanalytical instruments, Potok electric-arc facilities for atomic emission analysis of powder samples by the spill-injection method, and other devices; - about 100 atomic emission spectrometers entirely consisting of devices developed by the company. The company has a leading position in the development of scintillation atomic emission spectral analysis of geological powder samples and simultaneous multielement electrothermal atomic absorption analysis of liquids.


2020 ◽  
Vol 11 (3-2020) ◽  
pp. 23-29
Author(s):  
D. N. Bordiyan ◽  
◽  
I. R. Elizarova ◽  
V. F. Zaytsev ◽  
M. B. Malisheva ◽  
...  

The paper considers аsoftware method (WinLab32,Optima 2100DV)emission spectrometer for increasing the intensity of the analytical signal when the gas flow rate of the atomizer in the spray chamber changes. The determination of the optimal atomizer gas flow value was carried out as a result of mathematical and empirical approximations for each wavelength of the selected analytes.


2020 ◽  
Vol 86 (4) ◽  
pp. 5-11
Author(s):  
E. S. Koshel ◽  
K. V. Petrova ◽  
V. B. Baranovskaya ◽  
Ya. V. Kuminova

The analytical capabilities of the arc atomic emission analysis for determination the impurities in kaolin clays, the feedstock for producing metallurgical alumina, were studied. The analytical lines of the elements that are most free of interferences are selected. The conditions of the analysis and parameters of the spectrometer are determined: current strength, exposure, interelectrode distance, types and parameters of electrodes, weight of the sample. The detection limits and limits of determination of the following elements are specified: Ca, Cr, Cu, Ga, Mg, Mn, Mo, Nb, Ni, Pb, Sc, Ti, V, Y, Zn, Zr, La. The limits of determination are n x 10–5 – n x 10–6 wt.%. A comparative analysis of the samples of kaolin clays previously analyzed by another method in the framework of inter-method comparative tests is carried out. It is shown that there are no significant discrepancies between the results obtained by both two methods.


Author(s):  
A.I. Fateev ◽  
S.I. Krivosheev ◽  
V.A. Kvitsinnsky ◽  
T.G. Shendrik

Coal with high content of alkaline and alkaline earth metals (salty coal) occupies its definite place in an energy reserve of the country. Standard methods to assess the dynamics of the release of salts (mainly sodium chloride) into the aqueous solution during the desalting of salty coal were used. The advantages and disadvantages of existing methods for determining the sodium content in aqueous solutions are considered. The principle of operation of the upgraded spectral complex KSVU-5 based on the determination of the content of alkali metals in aqueous solutions by the method of atomic emission analysis is presented. The remarkable reproducibility of the measurements results on the spectral complex of small and large concentration of Na in solution is shown. The results of an experimental study of the desalting process by water washing of salty coal samples of various size classes (in the range 0-5 mm) and analysis of the obtained solutions by the spectral complex KSVU-5 are presented. Comparison of the sodium concentration in solutions during the desalting of salty coal obtained by atomic absorption and atomic emission analysis was performed. The possibility of using express analysis (Conductivity/TDS) to determine the concentration of sodium in solution is shown. Ref. 8, Fig. 6.


2018 ◽  
Vol 73 (2) ◽  
pp. 133-139 ◽  
Author(s):  
S. S. Savinov ◽  
R. M. Budalyaeva ◽  
A. I. Drobyshev

2017 ◽  
Vol 83 (1 p.II) ◽  
pp. 108-114 ◽  
Author(s):  
O. V. Pelipasov ◽  
A. N. Put’Makov ◽  
K. N. Chernov ◽  
I. D. Burumov ◽  
D. O. Selyunin ◽  
...  

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