金汞齐富集冷原子荧光测汞法的研究  

Datermination of Meacury by Non-Dispersive Atomic Fluorescence Spectrometer With Gold Amalgamation Concentration

作　　者：刘买利[1] 李晓玲[1] 牛深克 杜文虎[1] 

机构地区：[1]西北大学分析测试研究中心 [2]西安交通大学

出　　处：《分析测试通报》1989年第2期29-32,共4页

摘　　要：本文介绍了一种用于测定汞的金汞齐富集热解系统。研究了该系统与冷原子荧光测汞仪联用的工作条件和干扰,在最佳条件下的检出下限为4×10^(-13)克汞,分析周期3分钟,相对标准偏差2.5%(1.5×10^(-9)克汞)。A non-dispersive atomic fluorescence system determining mercury which makesuse of Au-coated chromatographic supports for collection of Hg and a water-coolingelectric furnace for desorption of Hg are described. The experimental conditions andthe effects of some organic solvents vapour on determination of Hg have been investi-gated. After optimization the detection limit of 0.0004 ng of Hg, the relative standarddeviation of 2.5%(1.5 ng of Hg, n=10) and the cycle time of 3 min. for entireprocese are obtained. Results are reported for application of the system to a varietyof samples, including gases, liquids and solids.

关 键 词：汞 金汞齐 富集 冷原子荧光法 热解 

分 类 号：O614.243[理学—无机化学]