Determination of Trace Beryllium in Geological Samples by Oxygen Doped Air-Acetylene Flame Atomic Absorption Spectrometry
WU Shao-wei1, 2, YANG Xiao-qiu1，CHEN Wen-wu1, YANG Ming1, TANG Zhi-yong1, JIN Ze-xiang1*
1. Faculty of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan 430074，China 2. Faculty of Chemistry and Environmental Engineering, Hubei Institute for Nationalities, Enshi 445000, China
Abstract：A new method for the determination of trace beryllium in geological samples by oxygen-air-acetylene flame atomic absorption spectrometry is reported in the present paper. The optimum determination conditions were selected. When suitable amounts of 8-hydroxyquinoline are added, the interference effect from the coexisting elements can be minimized and the sensitivity for the determination of beryllium can be increased. The detection limit(k=3) is 0.006 μg·mL-1 for beryllium. The method has been applied to the determination of trace beryllium in geological standard samples, and the results are in good agreement with the certified values with a precision of 4.69％ RSD(n=8).
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