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Hydrated Electron Extinction Coefficient Revisited
The Journal of Physical Chemistry A, 2008 The extinction coefficient of the hydrated electron (e(-))aq generated by pulse radiolysis is evaluated relative to the methyl viologen radical cation (*)MV(+), whose extinction coefficient at 605 nm has been carefully measured in the past. We find that the room temperature (e(-))aq extinction coefficients reported in the literature are underestimated ...
Patrick M, Hare +2 more
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The extinction coefficient of Purified tetrahydrofolic acid
Biochemical and Biophysical Research Communications, 1965Earlier studies (O’Dell et al --: t 1947; Hatefi et al _--, 1960; Rabinowitz, 1960) concerning the determination of the extinction coefficient of tetrahydrofolic acid (THFA) have used, for the most part, material which was not highly purified. Moreover, even the concentration of purified THFA has not been estimated by any direct means because, due to ...
L M, PRESCOTT, R C, WOOD, E L, SPECK
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Difference spectra and extinction coefficients of P700
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1972Abstract From the flash-induced absorption changes due to the redox reaction of N,N,N′,N′-tetramethyl-p-phenylenediamine coupled with P700, the difference extinction coefficients were determined to be 64 mequiv−1·cm−1at 700 nm for digitonin-treated Photosystem-I particles of spinach, and 70 mequiv−1·cm−1at 701 nm for Triton-treated Photosystem-I ...
T, Hiyama, B, Ke
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The extinction coefficient of multicomponent aerosols
Atmospheric Environment (1967), 1982The general problem of visibility reduction by aerosols is explored in order to identify the conditions necessary for determination of the roles of individual chemical species. The particle extinction coefficient depends on the distribution of chemical species with respect to particle size and from particle to particle within each size range.
Ouimette, James R., Flagan, Richard C.
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[Extinction coefficient of thyroglobulin].
Biokhimiia (Moscow, Russia), 1980The extinction coefficient at 280 nm of the solution (pH 7,2-7,4) of thyroglobulin from normal thyroid and nodular euthyroid goiter was measured with the values of 0,6-0,7 to 0,9 ml.mg-1.cm-1. The value of E1%280 as function of the iodoamino acid content depends on the morphological state of the thyroid gland.
E E, Gussakovskiĭ +4 more
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Extinction coefficient of polyolefin foams
Journal of Polymer Science Part B: Polymer Physics, 2005AbstractThe extinction coefficient of a collection of polyolefin foams was investigated experimentally and theoretically. Transmittance spectra were measured with Fourier transform infrared spectroscopy (FTIR) for samples of various thicknesses and different chemical compositions, densities, colors and structural characteristics.
R. A. Campo‐Arnáiz +3 more
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Extinction coefficients for the benzyl radical
Chemical Physics Letters, 1980The 12B2 → 3 2B2 transition in the absorption spectrum of the benzyl radical has been recorded in the gas phase together with a new band at shorter wavelengths, probably the first Rydberg band of the radical. The radicals formed in the flash photolysis of benzyl chloride and benzyl bromide and subsequent reactions have been investigated.
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A Study of the Extinction Coefficient for Ferric and Ceric Ions
Radiation Research, 1960Ferric Species Standard ferric sulfate solutions were prepared by dissolving spectrographically pure iron rod (Johnson Matthey) in sulfuric acid and oxidizing with hydrogen peroxide. The decadic molar extinction coefficient of ferric ion in 0.8 N sulfuric acid at 24.9?C was found to be 2199 ? 4 liters mole-' cm-l at 304 m,/. The effect of a decrease of
C M, HENDERSON, N, MILLER
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Theoretical approximations and experimental extinction coefficients of biopharmaceuticals
Analytical and Bioanalytical Chemistry, 2015UV spectrophotometric measurement is a widely accepted and standardized routine analysis for quantitation of highly purified proteins; however, the reliability of the results strictly depends on the accuracy of the employed extinction coefficients.
Mariana P, Miranda-Hernández +5 more
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Approximate calculation of extinction coefficient
Journal of Physics D: Applied Physics, 1990An approximate expression for estimating the extinction coefficient of small particles is proposed from the theoretical analysis of extinction values calculated by Mie theory for light scattering by small particles. It is found that the expression is applicable to particles with a dimensionless particle size parameter x between 0 and 100 and refractive
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