Ge(Ⅳ)-DBONPF-Triton X-100吸光光度法测定锗的研究和应用

ABSORPTIOPHOTOMETRIC DETERMINATION OF GERMANIUM (Ⅳ) WITH DBONPF IN THE PRESENCE OF TRITON X-100

研究了在Ｔｒｉｔｏｎ Ｘ－１００存在下，锗与ＤＢＯＮＰＦ的显色反应，在Ｈ２ＰＯ４（２＋１）介质中，试剂与锗形成１：２的桔红色配合物，最大吸收波长为５４０ｎｍ，ε为９．５０×１０＾４，锗量在０￣２５μｇ／２５ｍｌ范围内符合比耳定律。大多数金属离子不干扰测定，应用于锗铜合金中锗的测定，结果满意。

It is found that in a H3PO4(2 + 1) medium, Ge(Ⅳ) reacts with DBONPF in the presence of Triton X-100 to form a orange red complex with its mole ratio of 1 to 2. The absorption maxima of this complex lies at 540nm and its molar absorptivity is 9. 50×104L· mol-1·cm-1. Beer's law holds over the concentration range of germanium ( Ⅵ) between 0-25μg/25ml. Most of the commen co-existing metal ions do not interfere and the proposed method has been applied to the determination of germanium in Ge-Cu alloy, giving satisfactory results.