1.前言在各种分析仪器高度发达,并要求有高灵敏度、高选择性的分析方法的当今,有机试剂的作用很大,甚至可以说如果不利用有机试剂就难以发挥各种分析仪器的特性和功能。另一方面,如果不利用分析仪器,有机试剂的利用面也大受限制。这样,有机试剂的研制和分析仪器的研制,在开创新的分析方法中相辅相成,具有难以分割开来的关系。概言之,有机试剂的种类、数量都是很多的。其中属于螯合试剂的有机试 1. INTRODUCTION In today’s highly developed and demanding analytical methods with high sensitivity and selectivity, organic reagents are very powerful and can even be described as difficult to perform without the use of organic reagents and function. On the other hand, the use of organic reagents is also greatly limited without the use of analytical instruments. In this way, the development of organic reagents and the development of analytical instruments complement each other in pioneering new analytical methods and are difficult to separate. In short, the type of organic reagents, the number is very large. Among them are organic chelates that are chelating agents