摘要
在近中性环境中，研究了钡与偶氮胂Ⅲ、锌（钴）、邻菲口罗啉形成多元配合物的条件及其配合物组成。显色体系的摩尔吸光系数由二元配合物的２．１×１０４Ｌ·ｍｏｌ－１·ｃｍ－１提高到７．４×１０４Ｌ·ｍｏｌ－１·ｃｍ－１。用此方法，经过简单的分离后，可作硅钡合金中钡的光度法测定。
A colour reaction of barium with arsenazoⅢ and the formation conditions and compositions of the tolyatomic comoplexes have been studied in the presence of Zn,Co,and o phenanthroline hydrate. The compositions of the polyatomic complexes are Ba(ASAⅢ) 2 [Zn(Phen) 3] 4.The maximum absorbance is at 658.8nm and the molar absorptivity is 7.4×104·L·mol -1 ·cm -1 .Beer's law is obeyed in the range of 5-50μg Ba/25mL. This method has also been used to the determination of barium in silicon barium alloy.
出处
《光谱实验室》
CAS
CSCD
1998年第4期32-36,共5页
Chinese Journal of Spectroscopy Laboratory
