石墨炉原子吸收光谱分析中镧对锰的增敏作用  

Sensitivity Increasing Effects of Lanthanum in Determination of Mn by GFAAS

作　　者：渠荣遴[1] 朱孔营[1] 奉若涛[1] 

机构地区：[1]天津大学分析中心,天津300072

出　　处：《稀土》2004年第4期69-70,共2页Chinese Rare Earths

摘　　要：通过三种不同的实验方法设计,考察并发现了石墨炉原子吸收光谱分析中镧对锰的增敏作用。实验表明,无论采用对石墨管表面涂镧预处理的方法,还是在锰测定时在样品溶液中加入镧盐共同加热,均能有效地提高锰的信号强度,其信号增强因子最大可达1.62,是镧在石墨炉原子吸收光谱分析中产生增敏作用的又一实例。In this paper, 3 kinds of different methods were used to research the sensitivity-increasing effects of La in determination of Mn by GFAAS. The experiments show that the absorbance of Mn can be increased effectively in all of the 3 cases, and the best factor of sensitivity-increasing can be reached to 1.62 at the case when La and Mn were injected to the graphite tube together.

关 键 词：石墨炉原子吸收光谱 分析 锰 镧 增敏作用 

分 类 号：O657.31[理学—分析化学]