高纯稀土氧化铕中氯离子测定方法及干扰效应  

Interference Effects and Determination of Chlorion in High Pure Europium Oxide by Flame Atomic Absorption Spectrometry

作　　者：叶晓萍[1] 谢玮[1] 

机构地区：[1]惠州学院化学工程系

出　　处：《光谱实验室》2010年第4期1621-1624,共4页Chinese Journal of Spectroscopy Laboratory

摘　　要：研究了利用火焰原子吸收光谱法(FAAS)间接测定高纯稀土氧化铕中的痕量氯离子时,高纯氧化铕基体溶液对氯离子测定产生的干扰效应及消除干扰的方法。柠檬酸及8-羟基喹啉都可作为基体改进剂,且对不同含量的稀土基体溶液,其作用效果不同。以在2%的氧化铕基体溶液中,加入1%的柠檬酸为最佳。该法灵敏度高,线性范围是0.0—9.0mg/L,相关系数是0.9998,检出限1.8μg/L,相对标准偏差为3.3%,回收率为95.7%—100.2%。The interference effect of the matrix on determination of chlorion and its elimination were studied by determination of chlorion in high pure europium oxide by FAAS.Citric acid and 8-hydroxvquinoline all can be used as matrix modifiers,but it is different that the interference effect is eliminated with the content of the rare earth matrix solution.The citric acid（1%） in the matrix solution of europium oxide（2%） was used to increase the sensitivity and precision.Absorbency changes with concentration of chlorion linear range in 0.0—9.0mg/L.The detection limit is 1.8μg/L,RSD is 3.3%.The recovery is 95.7%—100.2%.

关 键 词：火焰原子吸收光谱法 高纯氧化铕 氯离子 干扰 基体改进剂 

分 类 号：O657.31[理学—分析化学]