交联葡聚糖凝胶是一种三维空间网状结构的高聚物。把离子交换基团结合到葡聚糖骨架上,可以制得离子交换凝胶,一般用于凝胶渗析色谱中,分离生物大分子,而用于富集、分离金属离子的报导不多。我们将—C—CH_2—SH基团引入交联葡聚糖骨架上,制得了巯基葡聚糖凝胶。这种凝胶,目前似未见报导。该凝胶的巯基含量较高,对多种重金属离子有良好的吸附和分离性能,吸附容量大,洗脱容易,而且机械强度好,使用方便,是一种有发展前途的新型吸附剂。 Sephadex is a three-dimensional network of high-polymer structure. The ion exchange groups bonded to the dextran skeleton ion exchange gel can be obtained, commonly used in gel dialysis chromatography, the separation of biological macromolecules, and for the enrichment, separation of metal ions is not much reported. We introduced the -C-CH_2-SH group into the cross-linked dextran backbone to prepare a thioglucan gel. This gel, it seems like there is no report. The gel has high content of mercapto groups, good adsorption and separation performance for various heavy metal ions, high adsorption capacity, easy elution, good mechanical strength and convenient use, and is a promising new adsorbent.