本文介绍新显色剂4,5-二溴-2,7-二羟基萤光黄的合成及研究了在Triton X-100存在下分光光度测定微量锗的合适条件。实验结果表明,在5N盐酸介质,方法有较高的灵敏度和选择性,摩尔吸收系数e~_(512)=1.72×10~5.在隐蔽剂存在下,30多种离子不干扰,特别适于铅锌矿、闪锌矿、方铅矿物中微量锗的测定。 This article describes the synthesis of a new chromogenic reagent 4,5-dibromo-2,7-dihydroxy lucifer yellow and the suitable conditions for the spectrophotometric determination of trace amounts of germanium in the presence of Triton X-100. The experimental results show that the method has high sensitivity and selectivity in 5N hydrochloric acid medium and the molar absorption coefficient e ~ (512) = 1.72 × 10 ~ 5.In the presence of concealed agent, more than 30 kinds of ions do not interfere, especially suitable Determination of trace germanium in lead, zinc, sphalerite and galena minerals.