Determination of Yttrium in Lanthanum Oxide by PTFE Fluorinating Technique Combined with ETV-ICP-AES  

作　　者：黄敏 江祖成 曾云鹗 

机构地区：[1]Department of Chemistry,Wuhan University,Wuhan 430072,China

出　　处：《Journal of Rare Earths》1992年第1期56-60,共5页稀土学报（英文版）

摘　　要：In this study,fluorinating vaporization combined with ETV-ICP-AES technique was used to determine yttrium for which refractory carbide is easily formed.The absolute detection limit is 12 pg,and three-order magnitude of improvement is obtained in comparison with the conventional vaporization ETV-ICP-AES.No memory effect is observed.The relative standard deviation is better than 5%.Some factors affecting fluorinating vaporization,including matrix effect are discussed.This technique is applied to determine yttrium in La_2O_3.In this study,fluorinating vaporization combined with ETV-ICP-AES technique was used to determine yttrium for which refractory carbide is easily formed.The absolute detection limit is 12 pg,and three-order magnitude of improvement is obtained in comparison with the conventional vaporization ETV-ICP-AES.No memory effect is observed.The relative standard deviation is better than 5%.Some factors affecting fluorinating vaporization,including matrix effect are discussed.This technique is applied to determine yttrium in La_2O_3.

关 键 词：Yttrium determination Fluorinating vaporization Inductively coupled plasma Graphite furnace vaporizer PTFE slurry 

分 类 号：TF845-55[冶金工程—有色金属冶金]