2-吡啶偶氮试剂由于其显色反应灵敏、试剂及其金属螯合物十分稳定、合成容易、成本较低。因此,近20年来,在分析化学方面得到了广泛的应用,发展十分迅速。已有资料进行了综述。国内在“独立自立、自力更生”方针的指引下,经过广大工人和科技人员的共同努力, 2-pyridine azo reagent because of its color reaction sensitive reagent and its metal chelate is very stable, easy synthesis, low cost. Therefore, in the past 20 years, it has been widely applied in analytical chemistry and has developed rapidly. The information has been reviewed. Under the guidance of the principle of “independence and self-reliance and self-reliance” in our country, with the concerted efforts of vast numbers of workers and scientific and technological personnel,