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Article
The influence of a probe on the optical path of atomic absorption spectrometer with a graphite tube atomizer
We have studied the influence on the atomic absorption signal of the obscuring of the transmission beam by a probe for the two-stage atomization in a graphite tube atomizer. The following parameters were varie...
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Article
Structure of nanosize bimetals Fe-Co and Fe-Ni
The phase composition and structural features of nano-size powders of Fe-Co and Fe-Ni systems synthesized by reducing the metal salts from strongly alkaline aqueous solutions are investigated by XAFS (XANES/EX...
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Article
Electrothermal atomic absorption spectrometry with two-step probe atomization and primary absorption signal feedback
A method is proposed to reduce the relative detection limits for elements in an atomic absorption spectrometer with a graphite furnace and two-step probe atomization, based on using feedback between the absorp...
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Article
Computer simulation of two-step atomization in graphite furnaces for analytical atomic spectrometry
The processes of sample fractionation by two-step atomization with the intermediate condensation of the analyte on a cold surface in graphite furnaces were theoretically studied. The transfer equation was solv...
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Article
Dynamics of fractional condensation of a substance on a probe for spectral analysis
The fractional separation of trace metals on a cold tungsten probe from salt matrix vapor, which interferes with the spectral analysis, is studied. The spatial structure of the vapor flows of sodium chloride, ...
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Article
Radiation resistance of ionic and ionic-molecular crystals
The factors that determine the stability of ionic and ionic-molecular crystals in ionizing radiation fields are analyzed. The concepts of the fundamental reactivity (stability) of a solid (the ability of the i...
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Article
Spatial structure of absorbing vapor in a transversely heated graphite atomizer with a probe
The dynamics of the spatial structure of absorbing layers of silver atoms and molecules and condensed particles of sodium chloride and potassium sulfate in a transversely heated graphite atomizer during atomiz...
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Article
Concentration of Analytes on the Probe in an Electrothermal Atomizer
To increase the sensitivity of the atomic-absorption analysis, we suggest concentrating the analytes on a tungsten probe through multiple fractional condensation of the sample vapor obtained in a graphite atom...
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Article
Electrothermal atomization of a substance with fractional condensation of the element being determined on a probe
This paper describes a method of electrothermal atomization with a fractional condensation of the elements being determined on a refractory probe with the aim of decreasing the matrix influences on the atomic-...
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Article
Separation of Silver from Chloride and Sulfate Matrices by Fractional Condensation in a Two-Step Graphite Atomizer
The influence of the excess of sodium chloride and potassium sulfate in a sample on the signal of atomic absorption of silver in a two-step graphite atomizer comprising a cup-evaporator and a tube-atomizer hea...
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Article
Effect of the Pd–Mg Modifier, Magnetic Field, and Gas Flows on the Dynamics of Matrix Vapors in a Transversely Heated Graphite Furnace Atomizer
Shadow spectral filming is used to study the spatiotemporal dynamics of the formation and dissipation of vapors of potassium sulfate and aluminum and indium nitrates in a transversely heated graphite furnace a...
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Article
Spatiotemporal Dynamics of Vapors of Chloride Matrices in a Transversely Heated Graphite Furnace for Atomic Absorption Spectrometry
The dynamic of the formation and dissipation of sodium and nickel chloride vapors in the THGA transversely heated graphite furnace atomizer of a SIMAA 6000 multielement spectrometer was investigated by shadow ...
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Article
Two-Stage Evaporation of Silver Samples in a Graphite Atomizer
A study has been made of the process of separation of silver from the excess in a sample of alkali-earth chlorides and sulfates by two-stage evaporation from the wall of a graphite atomizer and by fractional c...
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Article
Influence of the Matrix on the Atomic Absorption of a Transversely Heated Graphite Atomizer
We have investigated the influence of the sodium chloride and potassium sulfate excess in a sample on the absorption signals of Ag, Al, Au, As, Bi, Cd, Cu, Ga, Ge, In, Mn, Pb, Sb, Se, Sn, and Tl in a transvers...
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Article
Atomic Absorption Spectrometry of Fire-Extinguishing Aerosols
The process of extinguishing a propane-air flame by aerosols of salt solutions has been investigated with the use of an atomic absorption spectrometer. The method of comparing aerosols in terms of the extingui...
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Article
The effect of magnetic field on the shape of etch pits of paracetamol crystals
In the present study we investigate the effect of magnetic field on the shape of etch pits of the crystals of p-hydroxyacetanilide (paracetamol), which is widely used in pharmacy as antipyretic, antiphlogistic me...
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Article
Preexplosion phenomena in heavy metal azides
The paper reports results of investigation of the explosive decomposition of heavy metal azides in real time. The characteristics of the detected predetonation effects — the preexplosion conductance and lumine...
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Article
Direct determination of phosphorus in vegetable oils by electrothermal atomic absorption spectrometry
An approach to the practical implementation of the standard method of the direct determination of phosphorus in vegetable oils by electrothermal atomic absorption spectrometry with automated sample injection w...
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Article
Explosive decomposition of heavy-metal azides
A real-time investigation of the explosive decomposition of heavy-metal azides is reported. A multichannel instrument configuration designed specifically for the goals of the study is described; it is capable ...
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Article
Explosive luminescence of silver azide
Spectroscopic-kinetic investigations of the luminescence accompanying the explosive decomposition of silver azide are performed. A new phenomenon is observed: predetonation luminescence. A comparison of the pr...
