Microdetermination of hyoscyamine and sc
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Sawsan El-Masry; Saleh A. H. Khalil
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Article
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1973
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John Wiley and Sons
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English
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Following the acid-dye technique, hyoscyamine (or atropine) could he selectively determined in the presence of scopolamine, using bromcresol purple at pH 6.6. Total alkaloids were determined using bromthymol blue at pH 5.6. By referring to calibration curves of the two alkaloids with the appropriate