Determination of Trace Sodium Ion in High Purity Water by Graphite Furnace Atomic Absorption Spectrometry
YUAN Xia1, 2,SHEN Shi-gang1,SUN Han-wen1
1. School of Chemistry and Environment Science, Hebei University, Baoding 071002, China 2. The 718th Institute of China Shipbuilding Industry Corporation, Handan 056027, China
Abstract：The present paper studied on the determination of trace Na+ in high purity water by graphite furnace atom absorption spectrometry. A method of directly on-line concentrating samples in graphite furnace, multiple charging, ashing, then determining once by directly charging into pools of graphite furnace, was set up. The goal of concentrating samples and avoiding contamination as well as raising sensitivity were finally achieved. To prevent the background of purity water and regent in experiment from covering the ion concentration of the sample, the authors prepared the high purity water and regent to meet the requirement of the experiment by electrodialysis in series with distillation and below-boiling-point quartz distillation at pure worktable. Satisfactory results of linearity and detection limit were obtained. The detection limit with this method was 0.086 μg·L-1 for Na+. The recovery was 101%-104%.
Key words：Highpurity water;Trace sodium ion;On-line concentrate;Graphite furnace atom absorption spectrometry
原霞1，2,申士刚1,孙汉文1. 石墨炉原子吸收光谱法测定高纯水中痕量钠离子[J]. 光谱学与光谱分析, 2007, 27(01): 186-189.
YUAN Xia1, 2,SHEN Shi-gang1,SUN Han-wen1 . Determination of Trace Sodium Ion in High Purity Water by Graphite Furnace Atomic Absorption Spectrometry . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(01): 186-189.
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