Reaction of 2,3-Dimethylmercaptopropionic Acid with Methylene Blue as an Indicator Reaction for the Kinetic Determination of Selenium |
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| Authors: | D F Gainutdinova N V Shirshova V F Toropova G K Budnikov A R Garifzyanov |
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| Institution: | (1) Kazan State University, ul. Kremlevskaya 18, Kazan, Tatarstan, 42008, Russia |
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| Abstract: | A new indicator reaction between 2,3-dimethylmercaptopropionic acid and Methyl Blue was proposed for the kinetic determination of selenium. The optimal reaction conditions were found. A linear relationship was observed between the induction period and the Se(IV) concentration in the range between 0.9 and 9.6 ng/mL Se. Masking with EDTA and solvent extraction with diethyldithiophosphoric acid can be used for the separation of interfering elements forming complexes with the reagent. |
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