Results 241 to 250 of about 273,868 (276)
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Insulating oil decaying assessment by FTIR and UV-Vis spectrophotometry measurements
2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, 2013The most easily accessible and efficient way to determine the transformer condition is to use the insulating oil as diagnostic medium. Practical experiences have shown that more than 70% of incipient failures can be detected through oil tests. To meet pressing needs of power industries, fast, inexpensive and reliable laboratory testing procedures are ...
Y. Hadjadj, I. Fofana, J. Jalbert
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Derivative UV-VIS Spectrophotometry for Porphyrins Interactions in Photodynamic Therapy
Analytical Letters, 2010Derivative spectrophotometry is an analytical technique of great utility for extracting both qualitative and quantitative information from spectra composed of unresolved bands by calculating and plotting one of the mathematical derivatives of a spectral curve.
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UV/VIS SPECTROPHOTOMETRY FOR THE EVALUATION OF BINDER-AGGREGATE INTERACTIONS
Fuel Science and Technology International, 1992ABSTRACT UV/VIS absorption spectra of a few bitumens and their main generic fractions obtained by liquid chromatography have been recorded. Major or minor differences have been found depending on the nature of the bitumen and the generic fraction considered. Those differences are a valuable help in interpreting measurements of binder-aggregate affinity.
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Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 2019
Trichloronate is a racemic organophosphate, which has been used for the manufacture of insecticides. This compound induces delayed neuropathy in hen and humans.
D. Almenares-López +5 more
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Trichloronate is a racemic organophosphate, which has been used for the manufacture of insecticides. This compound induces delayed neuropathy in hen and humans.
D. Almenares-López +5 more
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Use of UV-Vis Spectrophotometry for Characterization of Carbon Nanostructures: a Review
Theoretical and Experimental Chemistry, 2021M. Abdolkarimi-Mahabadi +2 more
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Canadian Journal of Chemistry, 2015
A new sodium chlorite – iodide – acetylacetone chemical oscillatory reaction has been studied by the UV-Vis spectrophotometric method. The initial concentrations of acetylacetone, sodium chlorite, iodide, and sulfuric acid and the pH value have great influence on the oscillation observed at a wavelength of 570 nm for the starch–triiodide complex ...
Jingjing Chen +5 more
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A new sodium chlorite – iodide – acetylacetone chemical oscillatory reaction has been studied by the UV-Vis spectrophotometric method. The initial concentrations of acetylacetone, sodium chlorite, iodide, and sulfuric acid and the pH value have great influence on the oscillation observed at a wavelength of 570 nm for the starch–triiodide complex ...
Jingjing Chen +5 more
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Spectroscopy Letters, 2007
Abstract This paper describes and compares the results obtained from determination of total iron in abandoned mine drainage (AMD) from selected sites in western Pennsylvania by UV‐visible spectrophotometry (UV‐Vis) and flame atomic absorption spectrophotometry (FAAS).
Mark T. Stauffer +2 more
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Abstract This paper describes and compares the results obtained from determination of total iron in abandoned mine drainage (AMD) from selected sites in western Pennsylvania by UV‐visible spectrophotometry (UV‐Vis) and flame atomic absorption spectrophotometry (FAAS).
Mark T. Stauffer +2 more
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Qualitative aspects of UV-vis spectrophotometry of beta-carotene and lycopene
Journal of Chemical Education, 1989The aim of this paper is to use qualitative aspects of UV-vis spectrophotometry to understand structural behavior of these plyenic pi systems.
Barrie Tan, David N. Soderstrom
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Analytica Chimica Acta, 2009
Headspace single-drop microextraction has been combined with microvolume UV-vis spectrophotometry for iodine determination. Matrix separation and preconcentration of iodide following in situ volatile iodine generation and extraction into a microdrop of N,N'-dimethylformamide is performed. An exhaustive characterization of the microextraction system and
Francisco, Pena-Pereira +2 more
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Headspace single-drop microextraction has been combined with microvolume UV-vis spectrophotometry for iodine determination. Matrix separation and preconcentration of iodide following in situ volatile iodine generation and extraction into a microdrop of N,N'-dimethylformamide is performed. An exhaustive characterization of the microextraction system and
Francisco, Pena-Pereira +2 more
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