摘要
本文确立了一种测定陶瓷中铈组稀土总量的分析方法。在酸性介质中 ,试剂与铈组稀土 (镧、铈、镨、钕、钐 )有灵敏的显色反应。 (ε=1 .40× 1 0 5)且选择性好 ,显色速度快 ,可用于直接测定陶瓷中铈组稀土。
A method for determination of Rare Eare Earth in Ceramic earth has been developed.Rare Earth elements (RE)reat with DBK-arsenazo to form a blue compelex in acid medium.which gives a maximum absorption at 632nm the determintion range is 0-20μg of RE in 25ml solution.Most of clements in Ceramic earth do not interfere with the reaction.It has been used to determine total rare earth in Ceramic earth.
出处
《中国陶瓷工业》
CAS
2000年第1期43-44,共2页
China Ceramic Industry
关键词
稀土元素
光度法
陶瓷
二溴羧基偶氮胂
rare earth elements,spectophotometric,ceramic earth,DBK-arsenazo
