Determination of the characteristics of an electric arc plasma contaminated by vapors from insulators

1991 ◽  
Vol 19 (1) ◽  
pp. 1-8 ◽  
Author(s):  
M. Abbaoui ◽  
B. Cheminat
Keyword(s):  
Electric Arc ◽  
Arc Plasma

Plasma parameters in atomic-emission spectral analysis of phosphate concentrates of the fission products

2019 ◽  
Vol 85 (2) ◽  
pp. 17-22
Author(s):  
M. I. Khamdeev ◽  
E. A. Erin
Keyword(s):  
Spectral Analysis ◽  
Chemical Composition ◽  
Reference Materials ◽  
Fission Products ◽  
Atomic Emission ◽  
Electric Arc ◽  
Physical Parameters ◽  
Arc Plasma ◽  
Atomic Emission Spectral Analysis ◽  
Excitation Processes

Physical parameters of electric arc plasma as well as their time dependences are calculated when analyzing phosphate precipitates of the fission products of irradiated nuclear fuel. Phosphate concentrates of the fission products are known for their complex chemical composition and high thermal and chemical stability. Hence, direct atomic emission spectral analysis of phosphate powders without transferring them into solutions is advisable. Different conditions of sample preparation and synthesis of the reference materials determine the different chemical forms of the elements to be determined. This, in turn, affects the kinetics of their evaporation in the electrode crate and excitation processes in the plasma. The known mechanisms of those processes cannot always be transferred to specific conditions of the given method of analysis thus entailing the necessity of studying the effect of the samples chemical composition on the results of determination, proper choice of spectroscopic carriers, detailed study of spectra excitation processes in spectral analysis, and analysis of the physical parameters of the electric arc plasma. We used the lines Zn I 307.206 nm and Zn I 307.589 nm to measure the effective temperature of the central hot sections of the arc in a range of4500 - 6500 K. NaCl, BaCl2 and NaCl + T1C1 were studied to reduce the effect of the sample elemental composition on excitation conditions of the spectra and their stabilization as a spectroscopic carrier. In control experiments we used carrier-free samples. The coincidence of the values of the plasma physical parameters within the measurement error not exceeding 20%, as well as the identity of the nature of the kinetic curves for samples of phosphate precipitates and synthetic reference materials prove their correctness. The result of the study substantiate correctness of the direct atomic-emission spectral procedure in analysis of phosphate concentrates of fission when using synthetic reference materials.

Simultaneous Sorption of Chelates of Elements with Organic Reagents on Amberlite XAD-2 as a Preconcentration Step for the Emission Spectrometric Determination of the Elements

1993 ◽  
Vol 58 (8) ◽  
pp. 1821-1831 ◽  
Author(s):  
Jaroslav Jambor ◽  
Tomáš Javorek
Keyword(s):  
Nitrous Oxide ◽  
Argon Plasma ◽  
Electric Arc ◽  
Emission Spectrometry ◽  
Organic Reagents ◽  
Inductively Coupled ◽  
Simultaneous Sorption

The macrophorous hydrophobic sorbent Amberlite XAD-2 proved to be well suited to the preconcentration of minority amounts of Al, Au, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sn, Ti and V in the form of their chelates with organic reagents. From among 14 reagents tested, 8-hydroxyquinoline and diethyldithiocarbamate appeared most suitable for the quantitative sorption up to level of 1 μg l-1 of analyte. Emission spectrometry served as the analytical finish; the nitrous oxide-acetylene flame, electric arc and inductively coupled argon plasma were chosen according to the nature of the element. The procedure is convenient for the determination of the minority analytes in waters

Recent Advances in Electric Arc Plasma Generation Technology

ARS Journal ◽  
1961 ◽  
Vol 31 (1) ◽  
pp. 4-17 ◽  
Author(s):  
RICHARD R. JOHN ◽  
WILLIAM L. BADE
Keyword(s):  
Electric Arc ◽  
Arc Plasma ◽  
Plasma Generation ◽  
Recent Advances ◽  
Generation Technology

scholarly journals SPECTROSCOPY PECULIARITIES OF ELECTRIC ARC DISCHARGE PLASMA WITH IRON VAPOURS

2021 ◽  
pp. 171-175
Author(s):  
A. Murmantsev ◽  
A. Veklich ◽  
V. Boretskij
Keyword(s):  
Discharge Plasma ◽  
Arc Discharge ◽  
Line Emission ◽  
Plasma Temperature ◽  
Optical Emission ◽  
Plasma Source ◽  
Electric Arc ◽  
Spectral Lines ◽  
Electric Arc Discharge

This work is devoted to spectroscopy peculiarities of electric arc discharge plasma with iron vapours. The solution of the main issue of optical emission spectroscopy, namely, selection of iron spectral lines, to study the parameters of non-uniform and non-steady-state plasma source, was considered within this paper. Specifically, the Boltzmann plots technique was used for detailed analysing of application possibility of Fe I spectral lines as well as for determination of plasma temperature. The spatial profiles of selected spectral line emission intensities were used to measure the radial distributions of plasma temperature of free-burning arc discharge between consumable electrodes at 3.5 A.

To the Question of Studying the Regimes of Electro-Plasma Processing of Technogenic Wastes of Incineration Plants of the PRC for the Production of Melt and Fibrous Materials

2019 ◽  
Vol 945 ◽  
pp. 1001-1008
Author(s):  
S.L. Buyantuev ◽  
A.S. Kondratenko ◽  
S.A. Blagochinnov
Keyword(s):  
Specific Energy Consumption ◽  
Waste Incineration ◽  
Electric Arc ◽  
Gas Content ◽  
Arc Plasma ◽  
Fibrous Materials ◽  
Insulating Materials ◽  
X Ray ◽  
Ash Melting ◽  
Technogenic Wastes

The article presents the results of melting industrial waste incineration plants in China in electric arc plasma and demonstrated the possibility of melting the wastes in podrihtovali for production of a melt and producing fibrous materials based on it.Studies were carried out by optical and electron microscopy, spectral and x-ray analysis, as well as by capillary electrophoresis to determine the cation-anion composition. For processing of ash the electromagnetic technological reactor in which its melting was made was used. The presented melting unit made it possible to smoothly regulate the temperature and keep it at the outlet of the jet from the Letka, which made it possible to reduce the power consumption for the production of melt and fiber production. The experiments on melting showed a high gas content in the process of melting of the waste. Therefore, initially, to study the possible composition of the gas, the TERRA program modeling the process of ash melting with the release of gas was used, and the reactor parameters were calculated to determine the effective power and specific energy consumption. Thus, the purpose of the tasks was to obtain a homogeneous melt with associated purification of waste gases, followed by an analysis of its material composition, as well as the production of a thin mineral fiber to produce heat-insulating materials of the fibrous structure.

Chemical preparation of ultra-fine aluminium oxide by electric arc plasma

1981 ◽  
Vol 16 (6) ◽  
pp. 1716-1719 ◽  
Author(s):  
G. P. Vissokov ◽  
K. D. Manolova ◽  
L. B. Brakalov
Keyword(s):  
Aluminium Oxide ◽  
Electric Arc ◽  
Arc Plasma ◽  
Chemical Preparation

Thermal-shock performance of evaporated Al2O3, ZrO2, and laminated cermet coatings in an electric-arc plasma source

1976 ◽  
Vol 31 (3) ◽  
pp. 1040-1043
Author(s):  
V. S. Leshchenko ◽  
V. G. Novikov ◽  
A. V. Petrov ◽  
A. D. Sukhobokov ◽  
E. A. Turkin
Keyword(s):  
Thermal Shock ◽  
Plasma Source ◽  
Electric Arc ◽  
Arc Plasma ◽  
Cermet Coatings
Sign in / Sign up

Export Citation Format

Share Document