稀土元素的共显色现象,无疑为实际工作带来许多复杂的和不利的因素。但是它也可能在光度分析中找到一定的用途。作者在前文中研究了镧—钇—溴邻苯三酚红混合多核络合物的生成机理和性质。我们认为,上述共显色现象有可能在钇的存在下,不经分离直接测定某些铈组元素。本文报导用钕—钇—溴邻苯三酚红共显色效应光度测定钇铝石榴石中钕含量的 The common color phenomenon of rare earth elements undoubtedly brings many complicated and unfavorable factors for practical work. But it may also find some use in photometric analysis. In the previous article, the authors investigated the formation mechanism and properties of lanthanum-yttrium-bromopyrogallol red mixed polynuclear complexes. In our opinion, it is possible to directly determine some cerium group elements without separation in the presence of yttrium. In this paper, the neodymium content in yttrium aluminum garnet has been measured spectrophotometrically using neodymium-yttrium-bromopyrogallol red