随着稀土材料的深入研究,环保工作的需要,对痕量稀土的测定提出了更迫切的要求,而寻找高灵敏度的新型稀土显色剂则是解决这一课题的有效途径。 我们根据助色团电负性的大小对试剂灵敏度和显色反应类型的影响,在特定条件下,合成了下列新型稀土显色剂 With the further study of rare earth materials and the need of environmental protection, more urgent requirements are put forward for the determination of trace rare earths. However, finding a new type of rare earth color developer with high sensitivity is an effective way to solve this problem. According to the size of the electronegativity of the chromophore on the reagent sensitivity and the type of color reaction, under the specific conditions, we synthesized the following new rare earth developer