植物無機成分の系統的分析法の研究(第1報)

概要

論文の詳細を見る
A Study has been made of the results of systematic analysis of 170 kinds of natural plants, wherein the elementary constituents are divided into three groups : (1) primary elements, composed of K, Na, Ca, Mg, Si, S, and P, each amounting to more than 0.1% of the dry matter; (2) secondary elements, composed of Fe, Al, Mn, Cl, and Zn containing 0.010.1%; and (3) microelements, composed of the rest of the elements containing less than 0.01%. This report deals with the method of decomposition of plant tissues. The nitric acid-perchloric acid method does not cause the loss of phosphorus, but it does cause the loss of sulfur. Accordingly, the most practical method for the systematic analysis of the elements comprising the primary elements group together with Cl is to determine K, Na, Ca, Mg, and P by decomposition with nitric acid-perchloric acid, and then from another sample, to determine S, Si, and Cl by decomposition with sodium carbonate.