12 巻 (1948) 5 号 p. 47-49
Quantitative emission spectral analysis of berylium contained in a solution; whose concentration as metal is between 0.03 and 0.001 per cent., was studied by using a newly deviced liquid electrode applying the combination of a cup of platinum crucible and an iron salver as shown in Fig. 1.
Berylium in a liquid solution acidified by nitric acid either in copper or in aluminium was determined basing upon the ΔS of the live pairs of Be 3131.1/Ca 3158.9 Å and Be 3131.1/Cd/3250.2 Å. Here calcium was chosen as the internal standard and cadmium as the coupling electrode. The analytical accuracy ranges were from ±4.45 to ±7.32 per cent., in this procedure.