自我们发现铌(V)、钽(V)的四元络合催化显色反应以来,至今仍未见到类似的研究报导。本文进一步研究了Nb~V(Ta~V)-多元酚-酒石酸-过氧化氢四元络合催化显色反应的条件,研究了多元酚结构对催化显色性能的影响,探讨了催化显色的反应机理及分析应用的可能性。实验部分 1.铌(V)、钽(V)的标准溶液:准确 Since we found that the niobium (V), tantalum (V) four yuan complex catalytic chromogenic reaction, so far there is no similar study reported. In this paper, the conditions for the catalytic color reaction of Nb ~ V (Ta ~ V) -polyphenol-tartaric acid-hydrogen peroxide were also studied. The effects of polyhydric phenols on the catalytic performance of the catalysts were investigated. The reaction mechanism and analysis of the possibility of application. Experimental part 1. Niobium (V), tantalum (V) standard solution: accurate