Determination of Mercury in Battery by Microwave Digestion Cold Atomic Absorption Spectrometry
TANG Bao-ying1, LI Yu-jie1, XIE Xiao-dan1, LI Gong-ke1*, LIU Zhi-hong2, LIU Li2, LI Ying2
1. School of Chemistry and Chemical Engineering, Sun Yat-sen University，Guangzhou 510275，China 2. Shenzhen Entry-Exit Inspection and Quarantine Bureau, Shenzhen 518045, China
Abstract：In this paper, a method of microwave digestion followed by cold atomic absorption spectrometry (CAAS) for the determination of mercury in battery was developed. Microwave digestion conditions and operational conditions of CAAS were optimized. The digestive solution was a mixture of hydrochloric acid-sulfuric acid (4∶1, volume ratio) and the digestive time was 3 min at a microwave power of 1.0 MPa. The reaction medium was 0.5 mol·L-1 sulfuric acid at room temperature. The characteristic concentration was 0.25 μg·L-1. Five battery samples were determined, the recoveries were from 99.9% to 113%, and the relative standard deviations were from 4.85% to 11.9% (n=6). The analytical results were satisfactory. The method is fast, simple, accurate and solvent-saving.
唐宝英1，李玉洁1，谢小丹1，李攻科1*，刘志红2，刘 丽2，李 英2 . 微波消解-冷原子吸收光谱法测定电池中汞 [J]. 光谱学与光谱分析, 2004, 24(05): 622-624.
TANG Bao-ying1, LI Yu-jie1, XIE Xiao-dan1, LI Gong-ke1*, LIU Zhi-hong2, LIU Li2, LI Ying2 . Determination of Mercury in Battery by Microwave Digestion Cold Atomic Absorption Spectrometry . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(05): 622-624.
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