抄録
In order to establish the methodology of ion-exchanger phase absorptiometry, fundamental studies on light absorption measurements of ion-exchanger particle layer were made. A considerable amount of the light scattered by the solid phase could be effectively recovered by means of a bundle of optical fibers connected with a photodetector. By using an iodine lamp as the light source, it was confirmed that both Beer's and Lambert's laws were applicable to around 4 to 5 absorbance scale in the ion-exchanger particle layer system and up to the cell length of 4 cm if the Pt tube cell was used.