1.绪言自C. J. Pedersen和J. M. Lehn等首次发表关于冠醚和Kryptofix类的报导以来,现已发表了数百篇有关的文章,至今仍受到世界化学工作者的关注。已经报导的类似化合物的种类很多,有关的研究领域所涉及面也很广。然而,在分析化学中的应用方面的研究则使人感到意外的少。但自1975年桐栄等报导了关于用冠醚萃取碱金属离子的离子 1. INTRODUCTION Hundreds of articles have been published since the publication of the first reports of crown ethers and Kryptofix by C. J. Pedersen and J. M. Lehn, etc., and are still of concern to chemists around the world. There are many similar compounds that have been reported, and the relevant research areas cover a wide range of topics. However, the use of analytical chemistry in the research is surprisingly small. However, since 1975 Tong Tong et al reported on the extraction of alkali ions with crown ether ions