抄録
Fatty acid monoesters of ascorbic acid (I) in chloroform solution reduce selenious acid at room temperature and release selenium which appears as a stable brick-red colored colloidal solution. Because of the sensitivity of the reaction it is possible to identify very small quantities of I. The simplicity of the procedure permits rapid analysis, suitable for routine control. The method is highly specific for the identification of I in the presence of free ascorbic acid, its dehydro derivatives (III) and all the other substances normally found in pharmaceutical preparations. The limit of sensitivity of the method is 40 μg/ml.
