Browsing by Subject "Colemanite"

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    Migration behaviour of barium and strontium through colemanite
    (De Gruyter Oldenbourg, 1996) Hatipoǧlu, S.; Göktürk, H.; Erten, H. N.
    Column and batch experiments were performed to study the migration behaviour of Ba and Sr in colemanite matrix. 133Ba. 90Sr and 3H were used as tracers. The retardation factors and the distribution ratios of Ba and Sr in column experiments were found to be smaller than those obtained in batch experiments. Sorption Ra values of Ba were higher than those of Sr determined by both techniques. Sorption energies calculated from batch experiments are in good agreement with the literature values.
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    Spectroscopic evaluation of DNA–borate Interactions
    (Humana Press Inc., 2015) Ozdemir, A.; Sarioglu O. F.; Tekinay, T.
    We describe the binding characteristics of two natural borates (colemanite and ulexite) to calf thymus DNA by UV–vis absorbance spectroscopy, circular dichroism (CD) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, and a competitive DNA binding assay. Our results suggest that colemanite and ulexite interact with calf thymus DNA under a non-intercalative mode of binding and do not alter the secondary structure of the DNA helix. The FT-IR spectroscopy results indicate that the two borates might interact with DNA through sugar-phosphate backbone binding. © 2015, Springer Science+Business Media New York.