PROBLEM TO BE SOLVED: To provide a fiber material excellent in a removal performance of an adsorbate and a purification column incorporating the same.SOLUTION: The fiber material comprises a blended fiber comprising a plurality types of solid fibers having a common cross-sectional shape. At least two types of the plurality types of fibers have a constitutional ratio of 5.0% or more in the whole blended fiber. When a fiber having a highest rate of increase in surface area represented by the following formula (1) is defined as fiber (max) and a fiber having the lowest is defined as fiber (min) among the plurality types of fibers having a constitutional ratio of 5.0% or more, the fiber (min) has a rate of increase in surface area that is lower than that of the fiber (max) by 3.0% or more. The fiber (max) and the fiber (min) have a constitutional ratio in the whole blended fiber of 30.0% or more and 8.0% or more, respectively. The fiber (max) (a) has a rate of increase in surface area of 1.20 or more and (b) is porous, and a pore specific surface area is 5 m2/g or more: Rate of increase in surface area=(a circumference length in a fiber cross section)/(a circumferential length of a circle having the same cross sectional area as the fiber cross section)(1)SELECTED DRAWING: Figure 5COPYRIGHT: (C)2018,JPO&INPIT【課題】被吸着物質除去性能に優れた繊維材料およびそれを内蔵した浄化カラム。【解決手段】横断面形状を共通にする中実繊維を複数種類有する混繊繊維を含み、複数種類の繊維のうち少なくとも2種類は混繊繊維の全体における構成割合が5.0%以上であって、構成割合が5.0%以上である複数種類の繊維のうち、下記式(1)で表される表面積増加度が最も高い繊維を繊維(max)、最も低い繊維を繊維(min)としたときに、繊維(min)は、繊維(max)に比べて表面積増加度が3.0%以上低く、繊維(max)、繊維(min)の混繊繊維の全体における構成割合は、それぞれ30.0%以上、8.0%以上であり、かつ、繊維(max)は、(a)表面積増加度が1.20以上、(b)多孔質であり、細孔比表面積が5m2/g以上である繊維材料。表面積増加度=(繊維横断面における周長)/(繊維横断面と同じ断面積をもつ円における円周長)(1)【選択図】図5
