The porous and nonporous aminated poly (styrene-co-divinylbenzene) and porous poly (4-vinylpyridine-co-divinylbenzene) resin beads of 50-100 mesh were prepared by the suspension polymerization in order to separate boron isotopes ^l0B and ^l1B. After 0.1M boric acid containing l0% fructose solution was passed through the column, the boric acid band formed on the column was eluted with pure water. The flow rate of breakthrough and reverse breakthrough was 10m1/hr. The contents of boric acid of the each fraction was determined with neutralization titrations. The relative mass of boron isotopes of the fractions were analyzed on a mass spectrometer ^l0B was enriched at the rear part of chromatogram and ^l1B was enriched at the front part of it. The separation factor of ^l0B and ^l1B isotopes for the P-4VPCODVB, N-ASTCODVB and P-ASTCODVB by the column chromatography were 1.0050±0.003, 1.0071±0.0003 and 1.0082±0.0003

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