Results 161 to 170 of about 185,175 (195)
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A new substrate for surface enhanced Raman scattering of dye Sudan molecules
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2007A new SERS substrate was prepared using electro-polishing aluminum foils. Based on these high active SERS systems, surface enhanced Raman scattering (SERS) of Azo Dye Sudan were performed and carefully studied based on this highly active SERS substrate.
Xiaofang, Zhou +2 more
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Removal of water-insoluble Sudan dyes by Shewanella oneidensis MR-1
Bioresource Technology, 2012Decolorization of water-insoluble Sudan dyes was studied with Shewanella oneidensis MR-1, which removed 66.8%, 43.4%, 56.0% and 33.7% Sudan I-IV in 104 h, respectively and reduced Sudan I to aniline and 1-amino-2-naphthol. Lactate was identified as the most efficient electron donor for Sudan I reduction.
Qiuyan, Ji +5 more
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International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1990
Abstract An investigation was carried out on the effect of γ-radiation on the absorption spectra of Sudan red and Sudan blue dyes in organic solutions. A continuous decrease in the absorbance values at the absorption bands was observed with an increase of absorbed dose.
N. Souka, Ayad N. Farag
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Abstract An investigation was carried out on the effect of γ-radiation on the absorption spectra of Sudan red and Sudan blue dyes in organic solutions. A continuous decrease in the absorbance values at the absorption bands was observed with an increase of absorbed dose.
N. Souka, Ayad N. Farag
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Optical limiting behavior of Sudan III dye doped polymer
Optics & Laser Technology, 2010Abstract The optical limiting performance of Sudan III dye doped into ethylene propylene diene polymethylene polymer (EPDM) is investigated using 532 nm, 10 ns pulses from a frequency-doubled Nd–YAG laser. The optical limiting behavior is investigated by transmission measurement through the sample at different concentrations.
M.D. Zidan +3 more
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The specific and nonspecific solvatochromic behavior of Sudan dyes in different solvents
Canadian Journal of Chemistry, 2015Absorption and fluorescence spectra of some Sudan dyes (Sudan III, Sudan IV, and Sudan Black B) were recorded in various solvents in the range of 300–800 nm at room temperature. The solvatochromic behavior of these substances and their solvent–solute interactions were analyzed by means of the linear solvation energy relationship concept suggested by ...
M.S. Zakerhamidi +2 more
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On the molecular structure and aggregative properties of Sudan dyes in the anisotropic host
Journal of Molecular Liquids, 2000Abstract Dichroic ratio R and order parameter S of solutions containing five Sudan dyes in nematic solvents were investigated by the measuring of the intensity of the absorption bands in the visible region of parallel aligned samples. The effective factors such as molecular shape, self-association of the phenolic dye molecules through hydrogen ...
A. Ghanadzadeh +2 more
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Raman Spectra of Sudan Red Dyes and the Fluorescence Background Removal
2010 4th International Conference on Bioinformatics and Biomedical Engineering, 2010Sudan red dyes, as illegal food additives, can induce carcinoma of bladder. It is important to find out a method to provide an easy, precise and sensitive detection. The aim of our study is to obtain the Raman feature frequency excursion of SudanⅠ, Ⅱand Ⅲ, and draw clear Raman spectra.
Chen Chen +3 more
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Gas phase fragmentation of sudan and d6-labelled sudan azo dyes.
2007The gas phase behavior of the sudan dyes and their labeled homologues is important in the set-up of analytical methods. Sudan Azo dyes are widely used as synthetic dyes in many commodities. Many papers deals with their potential danger for human health, since some of them are carcinogenic .
DI DONNA, Leonardo +5 more
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Quantum mechanical investigation of the tautomerism in the azo dye Sudan III
International Journal of Quantum Chemistry, 2000The tautomerism in Sudan III bis-azo dye has been analyzed using ab initio Hartee-Fock (HF) and second-order Moller-Plesset perturbatim theory (MP2) and density functional (B3LYP) methods. Gas-phase and solution calculations were performed to investigate the solvent effect on the azo (OH)! hydrazone (NH) tautomeric equilibrium.
H�lio F. Dos Santos +4 more
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Lesions of the liver produced by sudan dyes
The Journal of Pathology and Bacteriology, 1964openaire +2 more sources