Acid-base, spectrophotometric, and colorimetric properties of 1,2-dihydroxyantraquinonone-3-sulfoacid (Alizarin Red S)статья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Acid-base, spectrophotometric, and colorimetric properties of 1,2-dihydroxyantraquinonone-3-sulfoacid (Alizarin Red S, ARS) have been studied in aqueous solutions at pH 3-13. Equations of calibration curves have been obtained for the dependences of absorbance and colorimetric functions (CF) on the ARS concentration. Molar absorption coefficients and CF have been determined. Dissociation constants of ARS have been determined using a spectrophotometric technique in its computational and graphical versions at an ionic strength from 0.1 to 0.5.