More than that , in this paper we firstly used cu2 + dative adsorption and ion exchange methods to purify polysaccharide of entrromorpha clathrata grev . polysaccharides with 98 . 4 % quality and 97 . 8 % recovery ratio were obtained 在第五章中,首次采用铜离子配位吸附与离子交换技术(静态动态)相结合的多糖提纯新方法,得到纯度为98