Simultaneous Determination of Germanium and Some Major Ash Forming Elements in Lignites Using a Dual-View ICP-OES
ZOU Ben-dong1, AODENG Gao-wa1, SHANG Hong-shan2, QI Lu2
1. College of Chemistry and Engineering, Inner Mongolia University, Hohhot 010021, China 2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Abstract：In this article, an ICP-OES method of simultaneous determination germanium and some major ash forming elements especially for Fe, Al, Ca, Mg, K, Na, Ti in lignites is described. An ICP-OES instrument equipped with a dual-view plasma torch and a simultaneous detector was used. This technology allows the simultaneous determination of trace elements and major components in the axial view along with in the radial view. The moderate operation condition of the instrument and analytical wavelength lack of interference from elements in the sample matrix was selected, the spectral background was automaticly eliminated. The obtained coal ashes were dissolved in mixtures of nitric acid, hydrofluoric acid and perchloric acid after coal samples were cinerated. The analytical results were in good agreement with those provided by national standard methods. The detection limit of the instrument is ranged between 0.000 39-0.10 μg.·mL-1, the precision of the method is in the range of 0.79%-2.84%, the average recovery of samples is 92.38%, the proposed method is well suitable for the determination germanium and some major ash forming elements in lignites.
Key words：ICP-OES;Lignites;Germanium;Ash forming elements
邹本东1, 敖登高娃1，尚洪山2，其 鲁2 . 双向视ICP-OES法同时测定褐煤中锗和一些主要成灰元素[J]. 光谱学与光谱分析, 2005, 25(09): 1496-1499.
ZOU Ben-dong1, AODENG Gao-wa1, SHANG Hong-shan2, QI Lu2 . Simultaneous Determination of Germanium and Some Major Ash Forming Elements in Lignites Using a Dual-View ICP-OES . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(09): 1496-1499.
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