摘要
本文研究了钍-对马尿酸偶氮氯膦(CPA)-溴代十六烷基三甲铵(CTMAB)体系的显色反应。实验证明,在盐酸介质中,CTMAB可增敏钦与CPA的络合反应,λ_(max)=684nm,ε=2.1×10 ̄5.本法应用于测定稀土矿石中的微量铣,结果良好。
he colour developing reaction of thorium-chlorophosphonazo P-aminohippumric acid-cetyltrimethyl ammonium bromide system was studied. It was proved that this reaction can be en-henced by the addition of CTMAB in the presence of hydrochloric acid and can have the result of λ_(max)=684 nm and ε=2.1×10 ̄5. This method is satisfied for the determination of trace amounts of thorium in rare earth minerals.
出处
《内蒙古大学学报(自然科学版)》
CSCD
1994年第1期60-63,共4页
Journal of Inner Mongolia University:Natural Science Edition
关键词
钍
CPA
CTMAB
分光光度法
显色反应
thorium chlorophosphonazo P-Aminopippuric Acid Spectrophotometric