铽与吡啶-2,6-二羧酸(以下简称DPA)形成螯合物的萤光有人从生物化学角度作过一些研究,但对测定稀土氧化物中微量铽的研究未见报导。本文系统地研究了Tb~(3+)-DPA螯合物萤光产生的条件,拟订了测定稀土氧化物中微量铽的萤光光度法,探讨了螯合物萤光强度与其组成的关系。 Fluorescence of terbium with pyridine-2,6-dicarboxylic acid (hereinafter referred to as DPA) to form a chelate Some people have made some studies from the biochemical point of view, but there is no report on the determination of trace terbium in rare earth oxides. In this paper, the conditions for the fluorescence of Tb ~ (3 +) - DPA chelate were studied systematically, and the determination of trace terbium in rare earth oxides by fluorimetry was discussed. The relationship between the fluorescence intensity of chelate and its composition was also discussed.