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 m/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 5
展开▼
