荧光分光光度法测定水中超痕量铍  

Spectrofluorometric Determination of Trace Beryllium in Nature Water

作　　者：郭谦[1] 刘燕[1] 卓宗亮 

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《分析化学》1990年第6期571-574,共4页Chinese Journal of Analytical Chemistry

摘　　要：为实测天然水中超痕量铍(低到0.007μg/L),先用硅胶床富集,洗脱后用2-羟-3-萘甲酸络合Be^(2+),测定其荧光强度。文中详细报告了适宜条件、干扰、回收率以及检测限等。Trace beryllium in nature water was determined with the silica gel preconcentration followed by the spectrofluorometry through the complex of Be and 2-hydroxy-3-naphthoic acid (456nm). The linearity of the working curves kept well over the range of 0. 01～0. 50μg/L (for 0. 5L of sample). The overall recovery was 98. 6%. The relative standard deviation from 11 runs was 4. 7% at 0. 2μg Be/L level, and 18. 3% round 0. 007μg Be/L level, and the detection limit(3σ) was 0. 006μg Be/L. Be concentration in nature water samples from Taiyuan district was found to be 0. 007～0. 021μg/L.

关 键 词：铍 水 荧光光度法 

分 类 号：O661.1[理学—分析化学]