Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.
一种
化学物质的分离是通过使用具有羟基取代基的
多糖或具有以下式(1)的酰基基团或以下式(2)的
氨基甲酰基团的
多糖处理其混合物来实现的:其中R表示具有核含有共轭π-键系统的原子团,其中包含在其中并与羰基或
氨基团结合并且距离最远的π-键系统中的原子之间插入的键的数量至少为5,即使在最短路径中也是如此。