SEVERAL methods 1–6 have been published for the quantitative estimation of amino-acids after separation by filter-paper chromatography. In general, these methods have only been applied to simple amino ...

Different substances travel through a piece of chromatography paper at different speeds. Paper chromatography uses this to separate mixtures of soluble substances. It provides clues on the possible ...

AN extensive literature on the quantitative paper chromatography of a large variety of organic compounds already exists. Most of these methods are based on: (a) measurement of the optical density of a ...