摘要
本文研究了新显色剂偶氮溴膦Ⅲ(BPA) Ⅲ)光度测定铀(Ⅵ)的条件,并结合TBP萃淋树脂分离富集较好地消除铀(Ⅵ)的伴生元素钍、稀土、锆、钙等的干扰。用于矿物中痕量铀的测定,狄得满意结果。
Uranium (Ⅵ) forms a color-complex with bromophosphonazo Ⅲ in acid medium. The maximum absorption is at 674nm. The apparent molar absorptivities were found to be 9.4×104 1.mol-1. cm-1 at pH 1 and 8.24×104 1·mol-1·cm-1 in 3mol/l nitric acid. After separation by TBP Levextrel resin, 10-fold amounts of cerium, 14-fold amounts of thorium, 6-fold amounts of zirconium and 150-fold amounts of calcium are tolerable. The method has been applied for the determination of uranium in ores with satisfactory results.
出处
《岩矿测试》
CAS
CSCD
北大核心
1989年第3期164-167,共4页
Rock and Mineral Analysis
