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(一)概述离子交换树脂的应用范围极广,不论在工业生产上,在分析化学中都经常应用。由于离子交换树脂有着其特殊优点,即机械性能好,对于酸、碱及各种溶剂极为稳定,能将各种阳离子与其他杂质进行有效的分离,经洗脱、再生后可循环使用等等,因此常常作为一种简便有效的分离方法使用。然而事物总是一分为二的,离子交换树脂亦存在着它的不足之处,其中最主要的是缺乏选择性,各种离子间分离主要是凭藉其所谓“交换势”的不同,但是许多不同离子间“交换势”的差异是很不显著
(A) Overview Ion exchange resin wide range of applications, both in industrial production, are often used in analytical chemistry. As the ion exchange resin has its special advantages, that is, good mechanical properties, for acid, alkali and a variety of solvents is extremely stable, can be a variety of cations and other impurities for effective separation, after elution, recycling can be recycled, etc., It is often used as a simple and effective separation method. However, things are always divided into two, ion exchange resin also has its disadvantages, the most important of which is the lack of selectivity, a variety of ion separation is mainly due to its so-called “exchange potential” of the different, but many The difference between “exchange potential” between different ions is not significant