Journal of Applied Spectroscopy (J Appl Spectros )

Publisher: Springer Verlag

Description

Journal of Applied Spectroscopy (JAS) is the translation of an important publication that reports on many key applications of spectroscopy in chemistry physics metallurgy and biology. An increasing number of papers focus on the theory of lasers as well as the tremendous potential for the practical applications of lasers in numerous fields and industries. The Russian volume-year is published in English beginning in July

  • Impact factor
    0.69
  • 5-year impact
    0.00
  • Cited half-life
    9.60
  • Immediacy index
    0.06
  • Eigenfactor
    0.00
  • Article influence
    0.00
  • Website
    Journal of Applied Spectroscopy website
  • Other titles
    Journal of applied spectroscopy (Online), Journal of applied spectroscopy
  • ISSN
    0021-9037
  • OCLC
    47237013
  • Material type
    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Springer Verlag

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Authors own final version only can be archived
    • Publisher's version/PDF cannot be used
    • On author's website or institutional repository
    • On funders designated website/repository after 12 months at the funders request or as a result of legal obligation
    • Published source must be acknowledged
    • Must link to publisher version
    • Set phrase to accompany link to published version (The original publication is available at www.springerlink.com)
    • Articles in some journals can be made Open Access on payment of additional charge
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: The possibilities of methods of terahertz time-domain spectroscopy and active spectral imaging for standoff detection of hidden explosives and cold and firearms masked, for example, under clothes are considered. Different schemes of practical realization of these methods are observed. We discuss the progress made in this direction, existing problems and the prospects for their solutions. The issues related to the sources and receivers of terahertz radiation are briefly discussed. Particular attention is paid to the quantum-cascade lasers as perspective sources of terahertz radiation and to the prospects for their use at room temperature. Keywords: time-domain terahertz spectroscopy, time-domain terahertz spectroscopy, active spectral imaging, explosives, standoff detection, quantum-cascade lasers.
    Journal of Applied Spectroscopy 09/2014; 81(№5):653.
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    ABSTRACT: In2S3 thin fi lms are grown on glass substrates by vacuum thermal evaporation followed by annealing in vacuum between 330 and 400 °C for different time durations. We have investigated the infl uence of the annealing parameters on the characteristics of thin fi lms. It is shown that thermal treatment changed the crystal structure and optical energy band gap of In2S3 thin fi lms. Two energy band gaps were determined for all the fi lms, one indirect and the other direct.
    Journal of Applied Spectroscopy 05/2014; 81(2):293-296.
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    ABSTRACT: Absorption bands corresponding to all types of hydroxyl associates [νas = 3476 cm-1 (OH…OH); νas = 3472 cm-1 (OH…N3); and νas = 3457 cm-1 (OH…O)] were assigned using IR spectroscopy in CH2Cl2 and n-butanol and its mixtures with various proton acceptors (THF, hexylazide, azide-containing oxetane monomers). The order of concentrations for these associates was . Equilibrium formation constants were estimated quantitatively. The proton-acceptor abilities of the studied additives were established.
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: Trace metal elements and pigments in cultured freshwater pearls from the mollusk Hyriopsis cumingii have been analyzed by plasma emission spectroscopy, Raman scattering, and infrared spectroscopy to investigate the coloration mechanism. The colors of the pearls are closely related to the presence of trace elements and the na-ture of the pigments. Purple pearls show much higher Ti, Ag, Mg, and Zn concentrations compared with the other samples. The concentration of polyenic molecules without methyl groups in the purple pearls is higher than in orange pearls. The organic matrix has been extracted via a decalcification process involving a weak acid (acetic acid). The estimated chemical formula of the pearl pigment is CHO-(-CH = CH-)10-OCH2OH.
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: The polarization properties of reflection Denisyuk holograms produced in a photo-anisotropic gyrotropic material by an unpolarized coherent light source are studied experimentally. The polarization state of the reconstructed image is found to depend on the polarization of the reproducing beam (polarization holographic memory). This effect is examined theoretically. Under certain limiting conditions on isotropic, anisotropic, and gyrotropic reactions of a polarization sensitive medium, the recovered image can be adequate with respect to the state and degree of polarization. When unpolarized light is used, the Jones matrix of the hologram responsible for the reconstructed image is equal to the Jones matrix of the object itself to within a constant factor; that is, illuminating the hologram with a wave of specified polarization yields a reconstructed field of the object that is identical, in terms of polarization, to the field of the object illuminated a priori with this wave. This method has been used to reproduce the degree of polarization of a partially polarized wave field and to study the polarization holographic characteristics of a photoanisotropic gyrotropic material.
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: The acousto-optical diffraction of Bessel light beams (BLB) propagating near the optical axis of uniaxial gyrotropic crystals is examined. It is shown that polarization-independent modulation of Bessel beams is possible in paratellurite crystals; that is, the Bragg diffraction efficiency is independent of the polarization state of the incident beam. The physical reason for this kind of modulation is found to be the simultaneous occurrence of two anisotropic diffraction processes, such that the conditions for Bragg synchrony are satisfied for orthogonally polarized elliptical Bessel beams. The coupled wave equations and an overlap integral method are used to study the dependence of the diffraction efficiency on the length of the acousto-optical interaction, the ultrasonic power, and the polarization state of the incident Bessel beam.
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: A mathematical model is proposed for the process of injection of material from a sample of limited weight into a discharge plasma in atomic emission spectral analysis, taking into account the occurrence of chemical reactions involving compounds of the analyte element. The effect of formation of new compounds of the analyte element on the nature of injection of this element into the discharge plasma is studied for different parameters of the processes occurring. Results are presented from experimental studies of processes of injection of an element when its compounds undergo chemical reactions during analysis.
    Journal of Applied Spectroscopy 02/2014; 81(1).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Features of the association of azidoalcohols in CH2Cl2 were studied by IR spectroscopy using 1,3-diazidopropan-2-ol and 1-azidoethan-2-ol as examples. It was established that the investigated compounds could exist as two types of [OH…N3] associates. In the fi rst instance, the OH group was affected by strong intermolecular interactions like in common alcohols; in the second, the interactions were much weaker. Density functional theory and quantum theory of atoms-in-molecules were used to determine the structures of such associates and the energy parameters of the observed intermolecular interactions. Also, the experimental and calculated frequencies of OH stretching vibrations were correlated.
    Journal of Applied Spectroscopy 02/2014; 81(1).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Analytical expressions are obtained for and used in calculations of the transmittance of thin (on the order of a wavelength) layers under conditions of total reflection at one of the boundaries in the general case of linearly polarized radiation where the oscillation azimuth of the incident wave is not 0 or π/2. The transmittances of this kind of layer for TE ( s-polarization) and TM ( p-polarization) waves are compared. The analytic expressions are used to calculate the dependence of the energy transmittance on layer thickness for a fixed angle of incidence and different oscillation azimuths of a linearly polarized incident wave, as well as for several angles of incidence (including the critical angle) with a fixed oscillation azimuth.
    Journal of Applied Spectroscopy 02/2014; 81(1).
  • [Show abstract] [Hide abstract]
    ABSTRACT: The influence of temperature on the spectroscopic properties of powders and aqueous solutions of riboflavin was studied using NMR, linear dichroism, IR and UV absorption spectroscopy, and luminescence. It was found that exposure of riboflavin powders over a wide temperature range (290-423 K) did not change significantly its properties and spectral characteristics. The absorbance and fluorescence of aqueous solutions of riboflavin decreased under the same conditions due to riboflavin thermal destruction. The fraction of destroyed molecules in aqueous solutions of riboflavin was in the range 4-28% and depended on the drug concentration and thermal conditions.
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: Information recording in three-level systems in external spatially inhomogeneous electric fields with coding of the data in the first two-frequency object pulse is studied. It is shown that when the nonequidistance parameter of the system is <1 the real-time scale in the stimulated photon echo response undergoes changes. When a spatially inhomogeneous electric field is applied between the first and second pulses and after the third pulse, a locking effect is observed in the stimulated photon echo response with an efficiency that depends on the field gradient.
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: The reaction between humic acid (HA, sample IHSS) and a metal ion (Cu2+) that was manifested as absorption bands in the range 210-350 nm was recorded using absorption spectroscopy. The reaction was found to be more effective as the pH increased. These data were interpreted in the framework of generally accepted concepts about the influence of acid-base equilibrium on the dissociation of salts, according to which increasing the solution pH increases the concentration of HA anions. It was suggested that [HA-Cu2+] complexes formed.
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: Absorption bands of OH stretching vibrations in IR spectra of o-vinylphenol ( o-VP) in the weakly polar solvents CCl4 and n-hexane were studied. Several rotamers of the free OH group were observed for o-VP in n-hexane. The fraction of o-VP rotamers with an O-H…π intramolecular hydrogen bond (IHB) was less than 20% according to experimental estimates for CCl4 solutions and calculations in the gas phase and cyclohexane. The theoretical effective enthalpy of the o-VP IHB was estimated for rotamer A (-ΔH = 0.20 kcal/mol).
    Journal of Applied Spectroscopy 02/2014; 81(1).
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    ABSTRACT: Two simple, accurate and precise spectrophotometric methods are developed and validated for the assay of pyrantel pamoate (PP) in pharmaceuticals. The methods employ the oxidative property of potassium permanganate (KMnO4) in acidic and alkaline conditions. In the first method (method A), PP is converted into its free base, pyrantel (PR), and treated with known excess of KMnO4 in acidic condition followed by the measurement of unreacted KMnO4 at 550 nm. Method B is based on the registration of absorbance of green colored chromogen formed due to the reduction of KMnO4 by PP in alkaline condition. The methods obeyed Beer's law over a range of 1-20 μg/ml in inverse manner, and 0.75-15 μg/ml for method A and method B, respectively, with apparent molar absorptivity values of 1.05⋅104 and 2.85⋅104 l⋅mol-1⋅cm-1. The optical parameters such as limits of detection (LOD), quantification (LOQ), and the Sandell sensitivity values are also reported. The accuracy and precision of the methods are assessed on intra- and inter-day basis. A recovery study by standard addition procedure is also carried out for further assurance of accuracy. The developed methods are successfully applied to determine PP in tablets. The results are more satisfactory as per current ICH guidelines.
    Journal of Applied Spectroscopy 02/2014; 81(1).
  • [Show abstract] [Hide abstract]
    ABSTRACT: The significant bathochromic shift of luminescence and long-wavelength absorption bands of [2.2]paracyclophane compared with the corresponding bands for molecules containing non-conjugated benzene chromophores was examined. The effect was due to strong interaction between π-orbitals of closely spaced benzene rings of the molecule that resulted in formation of an excited state of lower energy that was new in principle. It was concluded that the fluorescent state of the macrocycle and excimers formed by alkylbenzenes were of the same nature. The lowest electronic excited state of [2.2]paracyclophane appeared not only in emission but also in absorption. This explained the lack of an anomalous Stokes shift for it. The stronger shift of the macrocycle fluorescence band compared with the excimer band of alkylbenzenes was due to the fact that the highest occupied π-orbital of [2.2]paracyclophane was perturbed and located higher on the energy scale than for the chromophores of alkylbenzenes and polystyrene.
    Journal of Applied Spectroscopy 02/2014; 81(1).
  • [Show abstract] [Hide abstract]
    ABSTRACT: We present the results of an electron paramagnetic resonance (EPR) study of mixed cholesterol gallstones. We have established that free radicals are distributed nonuniformly within the interior of the stone. The type and number of paramagnetic centers depend on the pigment content in the selected layer. We show that the parameters of the sextet lines in the EPR spectrum of the pigment are close to the parameters of lines in the spectrum of a brown pigment stone.
    Journal of Applied Spectroscopy 02/2014; 81(1).
  • [Show abstract] [Hide abstract]
    ABSTRACT: The influence of tungsten, zirconium, and palladium compounds used as chemical modifiers on the configuration of Ag, Cu, and Si analytical signals was studied. It was suggested that the analyte atomization curve parameters change as a result of matrix effects of the selected modifiers. The prospects of using these modifiers in work with Ag, Cu, and Si were discussed
    Journal of Applied Spectroscopy 02/2014; 81(1).

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