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螯合物&络合物 Chelate & complex： 螯合物 chelate： 螯合物是具有环状结构的配合物，是通过两个或多个配位体与同一金属离子形成螯合环的螯合作用而得到。螯合物在水污染化学、分析化学、有机和生化等方面的应用十分广泛，如水中金属离子的分离分析、水的软化、分级沉淀、纤维染色、清洗金属、浮选、杀菌、蛋白质的水解与合成以及稳定维生素等。 络合物 complex： 络合物一般指配位化合物。 配位化合物为一类具有特征化学结构的化合物，由中心原子（或离子，统称中心原子）和围绕它的分子或离子（称为配位体/配体）完全或部分通过配位键结合而形成。络合物在分析化学、工业生产以及生物学中都有广泛的应用，如离子的分离、制镜工业、抗癌治疗等等。
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