<報文>無機定量クロマトグラフ法(第1報) : 定量化に關する基礎的研究
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Using the strips of filter paper impregnated with aluminum hydroxide, the authors studied the chromatographic estimation of minute quantities of compounds. Widths of the developed adsorption zones were directly proportional to the amounts of acids and salts adsorbed. They were also found independent of the concentration. Widths of the undeveloped zones varied with the concentration. The more concentrated the solutions were, the narrower the zone widths were. The amount of a salt adsorbed in the unit area of the paper grew less as the concentration became low. When they were thoroughly developed with water, zones of equal width could be obtained, irrespective of the volume of the solution or dilution, if a definite amount of a salt was adsorbed. It might be assumed that the amount of a salt which was adsorbed in the unit area of the paper would be was definite when equilibrium was reached between solid and liquid phases. At infinite dilution, an undeveloped zone would coincide with the developed one. Widths of the adsorption zones varied with the amount of aluminum hydroxide which was kept in the paper and alkalinity of the strips. Anions of solutes had also influences upon the zone widths. Thus, among the adsorption zones of sulfuric, hydrochloric and nitric acids, that of sulfuric acid was the narrowest. Those of hydrochloric and nitric acids showed nearly equal widths. The same was observed among the sulfates, chlorides and nitrates of various metals.
- 東北大学の論文
- 1951-10-03
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