萃取－石墨炉原子吸收光谱法测定高纯氧化钐中痕量铁

Determination of Trace Iron in Highly Pure Samaria by Extraction Graphite Furnace Atomic Absorption Spectrometry

研究了ＡＰＤＣ／ＭＩＢＫ萃取体系分离、富集高纯稀土氧化钐中的痕量铁，用石墨炉原子吸收光谱法测定，详细探讨了萃取条件和测定条件等。对氧化钐实际样品测定，其相对标准偏差低于７％，加标回收率９ｌ％－１０４％，方法简单，准确和实用。

In this paper,the meassuring condition and the extracting condition are studied.Trace Iron in highly pure samaria is successfully determined.The relative standard deviations are less than 7%.The recovery is 91% to 104%.The method is simple,accurate and practical.