Spectroscopy Letters (SPECTROSC LETT)

Publisher: Taylor & Francis

Journal description

This rapid publication journal provides vital coverage of fundamental developments in spectroscopy. Offering communications of original, experimental, and theoretical work, this international journal reports such methods as NMR, ESR, microwave, IR, Raman, and UV spectroscopy. In addition, atomic emission and absorption, X-ray spectroscopy, mass spectrometry, lasers, electron microscopy, molecular fluorescence, and molecular phosphorescence are discussed.

Current impact factor: 0.72

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 0.718
2012 Impact Factor 0.667
2011 Impact Factor 0.719
2010 Impact Factor 0.612
2009 Impact Factor 0.585
2008 Impact Factor 0.866
2007 Impact Factor 0.817
2006 Impact Factor 0.772
2005 Impact Factor 0.767
2004 Impact Factor 0.536
2003 Impact Factor 0.576
2002 Impact Factor 0.321
2001 Impact Factor 0.521
2000 Impact Factor 0.427
1999 Impact Factor 0.456
1998 Impact Factor 0.526
1997 Impact Factor 0.381
1996 Impact Factor 0.472
1995 Impact Factor 0.314
1994 Impact Factor 0.341
1993 Impact Factor 0.438
1992 Impact Factor 0.505

Impact factor over time

Impact factor

Additional details

5-year impact 0.61
Cited half-life 0.00
Immediacy index 0.08
Eigenfactor 0.00
Article influence 0.15
Website Spectroscopy Letters website
Other titles Spectroscopy letters
ISSN 0038-7010
OCLC 1642104
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Taylor & Francis

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Some individual journals may have policies prohibiting pre-print archiving
    • On author's personal website or departmental website immediately
    • On institutional repository or subject-based repository after either 12 months embargo
    • Publisher's version/PDF cannot be used
    • On a non-profit server
    • Published source must be acknowledged
    • Must link to publisher version
    • Set statements to accompany deposits (see policy)
    • The publisher will deposit in on behalf of authors to a designated institutional repository including PubMed Central, where a deposit agreement exists with the repository
    • STM: Science, Technology and Medicine
    • Publisher last contacted on 25/03/2014
    • This policy is an exception to the default policies of 'Taylor & Francis'
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: To investigate the feasibility of using near-infrared absorption to predict stability of light-harvesting complex 2 from the purple bacteria, we compared the structural stability of light-harvesting complex 2 with different absorption properties. The spectral changes showed that light-harvesting complex 2 from Rhodobacter azotoformans (absorption maxima at 799 and 847 nm) was more susceptible to both sodium-dodecylsulfate and acid than light-harvesting complex 2 from Rhodopseudomonas palustris (absorption maxima at 803 and 857 nm). It is concluded that a relatively redshifted near-infrared absorption tends to indicate a more stable structure of light-harvesting complex 2.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.927889
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    ABSTRACT: The formation of a manganese (II) coordination supramolecular polymer was studied by resonance light scattering spectra for manganese (II) detection. Bis-sulfosalophen (a ditopic tetradentate Schiff base ligand) and bis-phenanthroline-glutaraldehyde (a ditopic bidentate ligand) were prepared for the construction of the supramolecular polymer. In a procedure of manganese (II) detection, manganese (II) ion reacts with bis-sulfosalophen to form a binuclear manganese (II) complex. The binuclear complex then self-assembles with bis-phenanthroline-glutaraldehyde to form the supramolecular polymer, resulting in the production of strong resonance light scattering signal. The amount of manganese was detected by measuring the resonance light scattering intensity. Under optimal conditions, a linear range was found to be 0.5–50.0 ng/mL, with a detection limit of 0.1 ng/mL. The method has been successfully applied to determine manganese in vegetable and tea samples with relative standard deviations of less than 5% and recoveries of 95.8–105.7%.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.949351
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    ABSTRACT: As part of an undergraduate summer research project in vibrational spectroscopy, the micro-Raman spectra of synthetic samples of the famous artists' pigments, Chrome Yellow and Maya Blue, were investigated at various temperatures to determine their long-term stability with respect to dramatic changes in temperature. Synthetic Chrome Yellow was examined from −150°C to 500°C. Synthetic Maya Blue was studied from ambient temperature up to ∼200°C, when the Raman signals became swamped by the strong fluorescence from the sepiolite clay in which the indigo dye was encapsulated. Both pigments proved to be extremely stable with respect to significant changes in temperature, which presumably accounts in part for their long-term use in artwork.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.924529
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    ABSTRACT: Fourier transform infrared spectroscopy was used to investigate motor gasoline's vibration bands in the mid-infrared region under exposure up to 2 hr to 150 mT uniform magnetic field. No change in symmetric and asymmetric stretching of methyl and methylene vibrations was observed up to 2 hr exposure. In contrast, the band around 1465 cm−1, assigned to methylene scissoring vibration, was observed to decrease significantly after 1 and 2 hr of exposure, showing that static magnetic field changes methylene bending vibration in gasoline's hydrocarbons. Furthermore, methyl symmetrical deformation band at 1378 cm−1 and C–C vibrations at 1610 and 1522 cm−1 decreased in intensity after exposure. These results lead to the conclusion that exposure to a low-intensity uniform magnetic field can change the structure of motor gasoline, thereby declustering hydrocarbon molecules and improving the combustion process.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.933356
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    ABSTRACT: A powdery mildew fungi-induced disease appearing on leaves of Rubus corchorifolius L. has been observed in China, which resulted in seriously influencing the yield and quality of the fruit, and a presymptomatic detection of powdery mildew infection is needed to guarantee the yield and quality through removing the fungi in an early stage. Depth-profiling Fourier transform mid-infrared photoacoustic spectroscopy was applied to characterize both the healthy leaves and powdery mildew-infected leaves of Rubus corchorifolius L. The profiled surface could be divided into out layer (depth of about 1.32 µm) and deep layer (depth of about 1.87 µm). There were numerous differences in the total spectral range (500–4000 cm−1) between healthy leaves and infected leaves, especially the intensity of absorption bands of 2800–3000 cm−1 (aliphatic C–H vibration) and 2250–2350 cm−1 (CO2) significantly decreased when the leaf was infected by powdery mildew. For the out layer the standard spectral variance between healthy leaf and infected leaf was 7.33 × 102, whereas it was 1.86 × 104 for the deep layer; the standard spectral variance between out layer and deep layer for healthy leaf was 3.38 × 103, whereas it was 1.84 × 104 for infected leaf, which implied that both out layer and deep layer responded to powdery mildew infection. Combining spectral differences between healthy leaf and infected leaf and variances between out layer and deep layer, a presymptomatic detection of powdery mildew infection was successfully made, which provided an alternative option and noninvasive method for the fast diagnosis of powdery mildew infection on Rubus corchorifolius L.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.938758
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    ABSTRACT: Use of nanotechnology in biological systems by the synthesis of metallic nanoparticles is a burning area of research in recent times. In the present investigation, aqueous extract of Andrographis paniculata was used to produce silver nanoparticles by reduction of silver nitrate. It was noted that the synthesizing process was quite rapid and silver nanoparticles form within minutes of silver ions coming in contact with plant extract. UV-Vis spectrum of the aqueous medium containing silver ions indicated a peak at 432 nm corresponding to the plasmon absorbance of the silver nanoparticles. Fourier transform infrared spectroscopic analysis of the silver nanoparticles showed the presence of proteins that might be acting as capping agents around the nanoparticles. From scanning electron microscopy analysis, the size of the silver nanoparticles was measured and it was found that the average size was between 40 and 60 nm. Furthermore, the antibacterial activity of synthesized silver nanoparticles exhibited effective inhibition zones against seven bacterial strains tested. Among the bacteria tested Pseudomonas aeruginosa was found to be most susceptible to the silver nanoparticles. Phytochemical screening of the plant extract indicated the presence of alkaloids, flavonoids, amino acids, saponins, tannins, and terpenoids.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.938756
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    ABSTRACT: We numerically solve the two-dimensional Schrödinger equation and investigate isolated attosecond pulse generation by combining a left and a right elliptically polarized pulse together. It is found that the plateau of the harmonic spectra can be extended and the quantum paths can be controlled by adjusting ellipticity. A broadband width of about 220 eV is generated for the case that ellipticity equals 0.3, and time-frequency time–frequency analysis shows that only one long quantum path contributes to high-order harmonic generation. By superposing a bandwidth of 60 eV near the cutoff of the harmonic plateau, an attosecond pulse with the duration of about 62 as could be generated.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.938757
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    ABSTRACT: A novel “turn-on” fluorescent sensor based on glucose and rhodamine B for detection of mercury ions was designed and synthesized. The fluorescent sensor showed an extreme specificity for mercury ions than for other metal ions in aqueous solution. On adding mercury ions to the solution of glucose-based rhodamine B sensor, the absorption and fluorescence signals enhanced remarkably at 567 and 587 nm, respectively. Titration of sensor with mercury ions showed 1:1 stoichiometric reaction. The cyclic voltammetric measurement of an increasing amount of mercury ions in the solution of glucose-based rhodamine B sensor commendably showed the change in the fluorescence characteristics. Furthermore, the successful detection of trace amount of mercury ions in water indicated that glucose-based rhodamine B sensor can be used for the detection of the limited mercury ions in drinking water.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.933354
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    ABSTRACT: Farm soil is the main source of greenhouse gas emission. We developed an optical system for measuring nitrous oxide and carbon dioxide from soil using infrared spectrometer and long optical path gas cell based on multi-reflecting mirrors. The spectral characteristics of nitrous oxide at 2198–2223 cm−1 and of carbon dioxide at 2258–2283 cm−1 were observed with the system. We studied the rules of greenhouse gas emission and found that nitrous oxide increased with soil moisture whereas carbon dioxide showed no obvious relationship with moisture. We also studied the diurnal variation rules of nitrous oxide and carbon dioxide from fertilized soil. These results are consistent to the previous results obtained with other analytical methods. The results indicate that the infrared spectroscopy with long optical path is an effective way to measure greenhouse gas emission from soil.
    Spectroscopy Letters 09/2015; 48(8). DOI:10.1080/00387010.2014.930754
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    ABSTRACT: In this work, Raman spectroscopic analysis was applied to determine the structures and cage occupancies of the hydrates that formed from the system of flue gas (simulated by carbon dioxide–nitrogen–sulfur dioxide)–sulfur dioxide aqueous solution, and from the system of flue gas–sulfur dioxide containing tetra-n-butyl ammonium bromide (TBAB) aqueous solutions (sulfur dioxide mass concentration 0, 1.0, and 7.0 wt%). Comprehensive TBAB (solid, aqueous, and hydrate) Raman spectra were also obtained. The results reveal that when TBAB is used as promoter, both sulfur dioxide and carbon dioxide are encaged in the hydrate from systems of flue gas-TBAB solution with low sulfur dioxide concentration (0, 1.0 wt%), whereas in the hydrate from the system of flue gas-sulfur dioxide highly concentrated (7.0 wt%) TBAB solution, sulfur dioxide will be the sole gas guest encaged in the semi-clathrate hydrate. This suggests the sulfur dioxide concentration significantly influences the hydrate cage occupancies and separation selectivity of the hydrate-based technology. A two-stage hydrate-based flue gas purification process is proposed: one aims at desulfurization when sulfur dioxide concentrates to a relatively high level with the solutions recycling and in the other we can remove the sulfur dioxide and carbon dioxide simultaneously.
    Spectroscopy Letters 08/2015; 48(7). DOI:10.1080/00387010.2014.909854
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    ABSTRACT: The characteristic changes in UV-visible and Raman spectra of lithocholic acid on E-2-Butenal for antiglioma are the maximum absorption peak of E-2-Butenal from 302 to 319 nm, the decreases of Raman signal of 1688 cm−1 and 1641 cm−1 in E-2-Butenal by lithocholic acid with the phenomenon of 1688 cm−1 splitting, and the disappearance of the band at 932 cm−1, which clearly displays the change of wagging in methyl. In the presence of mitochondrial protein deriving from glioma, the above mentioned effects of lithocholic acid on E-2-Butenal are more significant by Raman spectra detections. The molecular targets of lithocholic acid on E-2-Butenal are carbonyl group, conjugated double bonds, and methyl, respectively. The study concludes that the interaction between lithocholic acid and E-2-Butenal decreases the carbonyl group bond strength in E-2-Butenal and then changes the structure and function of E-2-Butenal. The internal cause of the interaction between lithocholic acid and E-2-Butenal leading to the change of the carbonyl group bond strength is the electronic delocalization near the carbonyl group bond in E-2-Butenal. Since E-2-Butenal derives from glioma in the process of lipid peroxidation of mitochondria, our investigation significantly contributes to understanding the mechanism of action of lithocholic acid as a potential antiglioma drug.
    Spectroscopy Letters 08/2015; 48(7). DOI:10.1080/00387010.2014.918043
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    ABSTRACT: The Raman studies of lead zirconate titanate with varied grain size from 27.5 nm to 983 nm were performed under pressure up to 32 GPa to elucidate the scenario of phase transition pressures of lead zirconate titanate, which lies in the morphotropic phase boundary. The coexistence of ferroelectric rhombohedral and tetragonal phases at ambient condition changed to the coexistence of tetragonal and cubic phases at intermediate pressure and finally, transited to paraelectric cubic phase at elevated pressure. The pressure evolution of Raman spectra results indicated that the phase transition pressure increased with the reduction of the particle size.
    Spectroscopy Letters 08/2015; 48(7). DOI:10.1080/00387010.2014.920887
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    ABSTRACT: Urine contains a variety of compounds including a number of natural fluorophores. Fluorescence spectroscopy has proven to be a useful tool in analytical science. Fluorescence detection has three major advantages over other light-based investigation methods: high sensitivity, speed, and safety. Our work presents the newest approach to analysis of dog urine. Fluorescent fingerprint can very quickly reveal differences between complicated mixtures without adding any reagents. We describe autofluorescence characteristics of the urine of healthy dogs and of those with various disorders using fluorescent fingerprint. Fluorescent analysis has given good results to distinguish between pathological urine and the healthy standard in dogs. Our results suggest that this method can be used to characterize fluorescent properties of canine urine and to reveal some pathological changes in dogs.
    Spectroscopy Letters 07/2015; 48(6). DOI:10.1080/00387010.2013.878878
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    ABSTRACT: Micro-Raman spectroscopy was performed on normal and tumor breast tissue of rats. Our results have shown that the strength of the Raman spectra intensity can be useful to differentiate between normal and breast tumor tissues. Also, the Raman fingerprint of the biochemical markers of the tissue makes possible the automatic discrimination and classification between normal and abnormal tissue. For this evaluation, principal component analysis and the generalized linear discriminate analysis were used. From our results, we believe that rat model of breast cancer can be helpful to the understanding of the molecular changes of breast cancer and its early detection.
    Spectroscopy Letters 07/2015; 48(6). DOI:10.1080/00387010.2014.895386
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    ABSTRACT: Based on infrared absorption spectroscopy technique, a carbon monoxide sensor was developed using the fundamental absorption band of carbon monoxide molecule at the wavelength around 4.6 µm. The developed sensor consists of pulse-modulated wideband incandescence, open ellipsoid light-collector gas-cell, dual-channel detector, and control and signal-processing module. With the prepared standard carbon monoxide gas sample, sensing characteristics on carbon monoxide were investigated using the sensor. Experimental results reveal that the limit of detection is about 10 ppm, the relative error at the limit of detection point is less than 14%, and that is less than 7.8% within the low concentration range of 20∼180 ppm. The maximum absolute errors of 50 min long-term measurement on the 0 and 14 ppm CO gas samples are about 3 and 3.17 ppm, respectively, and the standard deviations are as small as 0.18 and 1.25 ppm, respectively. Compared with the reported carbon monoxide detection systems utilizing quantum cascaded lasers and distributed feedback lasers, the proposed sensor shows potential applications in carbon monoxide detection under the circumstances of coal-mine and environmental protection, by virtue of high performance, low cost, simple optical structure, and so on.
    Spectroscopy Letters 07/2015; 48(6). DOI:10.1080/00387010.2014.905961
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    ABSTRACT: Laser-induced breakdown spectroscopy is very attractive analytical method owing to many advantages, but it is complicated by the matrix effect due to complex nature of the laser–sample and plasma–particles interaction processes. For more precise and accurate analysis results, this effect must be reduced to a minimum. The approach used in this study to reduce the matrix effect was based on the selection of the optimum parameters of the system using pure element standards, followed by data processing and various normalization techniques. The copper alloys were selected for this study knowing that these materials are particularly difficult to be analyzed by laser-induced breakdown spectroscopy due to large differences in the physical properties of the metal constituents. But the accuracy improvements obtained by the proposed approach are encouraging to generalize it to other similar materials. Eighteen reference standards of copper alloys were measured to construct the calibration curves after optimum parameter settings. The coefficients of determination, R 2, obtained from the calibration curves of most elements present in copper alloys were close to 1 (0.99). The validation of this approach was verified by extra reference standards measurement, which gives relative measurement errors varying from about 1–8% according to the inverse level of the element concentration.
    Spectroscopy Letters 07/2015; 48(6). DOI:10.1080/00387010.2014.895387
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    ABSTRACT: Water-soluble cadmium selenide/cadmium sulfide/zinc sulfide core/shell/shell quantum dots were synthesized in aqueous solution using trisodium citrate as modifier. The crystal structure, morphology, component, and spectral properties of cadmium selenide/cadmium sulfide/zinc sulfide core/shell/shell quantum dots were characterized by X-ray power diffraction, transmission electron microscope, energy dispersive X-ray analysis, infrared spectrum, ultraviolet–visible absorption spectrum, and fluorescence spectrum. The results show that the spherical citrate-modified cadmium selenide/cadmium sulfide/zinc sulfide core/shell/shell quantum dots with diameter around 3.6 nm belong to the cubic zinc blende structure. The citrate-modified cadmium selenide/cadmium sulfide/zinc sulfide core/shell/shell quantum dots show a narrow, symmetric, and strong fluorescence emission spectrum band with narrow full width at half maximum of 53 nm, and the fluorescence quantum yield can reach up to 37.3%. The high-quality citrate-modified cadmium selenide/cadmium sulfide/zinc sulfide core/shell/shell quantum dots with good fluorescence properties have potential for application in biological fluorescence analysis.
    Spectroscopy Letters 07/2015; 48(6). DOI:10.1080/00387010.2014.902385
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    ABSTRACT: The structural and morphological features influencing the glass transition temperature of epoxy/silica nanohybrid and nanocomposite materials containing 25–30 phr of nanoscale silica phases are discussed in this letter to answer the questions related to the processing–structure–property relationships. X-ray photoelectron spectroscopy and atomic force microscopy are used to study the surface chemical structure and morphology of epoxy/silica nanohybrids and nanocomposites. Nanohybrids are synthesized via in situ sol-gel process, while the respective nanocomposites are prepared by mechanical blending of preformed silica nanoparticles into epoxy resin. Differential scanning calorimetry is used to determine glass transition temperature of different materials. The surface analytical characterizations reveal that in situ sol-gel process is more suitable for producing organic–inorganic hybrid materials with superior glass transition temperature owing to the achievement of stronger interfacial compatibility and greater crosslink density. A number of other factors affecting glass transition temperature are explored and discussed with reference to surface chemistry, microstructure, and morphology of epoxy/silica nanohybrids and nanocomposites, respectively.
    Spectroscopy Letters 07/2015; 48(6). DOI:10.1080/00387010.2014.897957
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    ABSTRACT: This study describes a measuring system for mass spectrometry, consisting of a glow discharge ionization source for soft plasma ionization and a time-of-flight mass spectrometer, to detect toxic volatile organic compounds rapidly and easily. It is the most important to determine how the complicated fragmentation of such compounds can be suppressed to occur so as to recognize the mass spectra of the volatile organic compounds as their fingerprints. The novelty of this work is that the optimal discharge condition for the soft plasma ionization–time-of-flight mass spectrometer system could be selected, so that the parent mass peak of analyte molecules could be observed both with high sensitivity and with little or no fragmentation of them. Use of air gas at a pressure of 1000 Pa provided the most favorable result for these criteria, whereas, in a previous report, the soft plasma ionization source operating with argon at a pressure of 346 Pa had yielded additional mass peaks of the fragmented species. The reason for this would be explained by the fact that energetic electrons in the plasma, which principally cause the fragmentation of the volatile organic compounds, have lower number density at higher gas pressures, through de-accelerated collisions with the plasma gas.
    Spectroscopy Letters 07/2015; 48(6). DOI:10.1080/00387010.2014.905962