Abstract
Abstract An isocratic reverse phase liquid chromatographic (LC) system has been developed for qualitative and quantitative assay of morphine, codeine, thebaine, papaverine, and narcotine in gum opium. Five extractions with 2.5% aqueous acetic acid quantitatively extracted the major alkaloids. A mixture of 1% aqueous sodium acetate (pH 6.78), acetonitrile, and 1,4-dioxane (75 + 20 + 5) is used as LC mobile phase | for better resolution of alkaloid peaks, especially those of morphine and codeine. The method is suitable for routine analysis of gum opium I samples.
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