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本文以环氧氯丙烷为交联剂，与β－环糊精反应，生成一种具有三维网状结构且不溶于水的稳定大分子物 质。该物质与络合剂酸性铬蓝Ｋ作用，形成包结树脂。用该树脂富集水中痕量Ｃａ（Ⅱ），取得了较满意的结果。
In this paper, epichlorohydrin as a crosslinking agent, and β-cyclodextrin reaction to generate a three-dimensional network structure and insoluble in water stable macromolecules. The material and the complexing agent acid chrome blue K role to form encapsulated resin. The resin was used to enrich trace amounts of Ca (Ⅱ) in water, and satisfactory results were obtained.