摘要
基于Jones试剂选择性还原Eu(Ⅲ),以Eu(Ⅱ)还原亚甲蓝使其褪色的反应,建立了二次还原测定铕的FIA-SP方法.该法简便、快速、省试剂且重现性好.
A rapid and selective spectrophotometric method has been developed for the determination of europium in the mixtures of rare earths by flow injection analysis. In the presence of all other lanthanides including yttrium, Eu (Ⅲ) is selectively reduced in a Jones reductor, then the Eu (Ⅱ) produced reats with Methylene Blue (M. B.) solution. M. B. is reduced to the colourless tleuco form by Eu (Ⅱ) and the excess of M. B is determined by spectrophotometry. The present method has been applied to the analyais of trace amounts of europium in synthetic samples and mixed rare earth oxides with satisfactory results.
出处
《辽宁科技大学学报》
CAS
1990年第3期7-10,共4页
Journal of University of Science and Technology Liaoning
基金
国家自然科学基金
