RADIOACTIVE SUBSTANCE REMOVAL FILTER, RADIOACTIVE SUBSTANCE REMOVAL FILTER UNIT IN WHICH SAID RADIOACTIVE SUBSTANCE REMOVAL FILTER IS USED, AND METHOD FOR REMOVING RADIOACTIVE SUBSTANCE

摘要

Provided are: a radioactive substance removal filter capable of suppressing the deterioration of radioactive substance removal capability even if an organic solvent, in particular a compound having a high boiling point of 120 degrees or higher, is present in the air; a radioactive substance removal filter unit in which the radioactive substance removal filter is used; and a method for removing radioactive substances. The radioactive substance removal filter is provided with an activated carbon fiber layer 2 on the downstream side and an activated carbon particle layer 3 on the upstream side. The activated carbon fiber layer 2 includes a fiber-like activated carbon to which an amine compound is attached, and the ratio of the amount of the amine compound attached in the activated carbon particles layer 3 and the amount of the amine compound attached in the activated carbon fiber layer 2 (amount of the amine compound attached in the activated carbon particles layer 3 / amount of the amine compound attached in the activated carbon fiber layer 2) is 0.1 or less (including 0).