Abstract：The samples were decomposed with HNO3+HCl, and Fe3+-citric acid mix solution was added to eliminate interferences. The elimination and mechanism of tellurium interference with selenium determination by HG-AFS were studied, and the residuary influence of NO-3 and NO-2 was investigated. The interference of ferric trichloride, hydrochloric acid, citric acid and PBH concentration with the fluorescence intensity of selenium was observed by the orthogonal test design combined with the mono-factor test. The detection limit was 0.15 μg·L-1. The relative standard deviation of a solution containing 27.01 μg·L-1 selenium in sample was in the range of 3.1%~4.2% (n=11), and the recoveries of selenium were 96.1%～102.3%. The results obtained were satisfied, and the method was successfully applied to the determination of selenium in high purity tellurium samples.
Key words：High purity tellurium;Selenium;Interference and elimination;Atomic fluorescence spectrometry
马名扬，苏流坤*. HG-AFS测定高纯碲中痕量硒干扰的消除[J]. 光谱学与光谱分析, 2011, 31(11): 3123-3125.
MA Ming-yang，SU Liu-kun*. Elimination of Interference in the Determination of Selenium in High Purity Tellurium by HG-AFS. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(11): 3123-3125.
[1] Pridachin D N, Yakushev M V, Sidorov Yu G, et al. Applied Surface Science, 1999, 142(14): 485. [2] Engelhard T, Jones E D, Viney I, et al. Thin Solid Films, 2000, 370(12): 101. [3] Munirathnam N R, Prasad D S, Sudheer C, et al. Journal of Crystal Growth, 2003, 254(3): 266. [4] ZHANG Jin-mao, FAN Fan, REN Ping(张锦茂, 范 凡, 任 萍). Rock and Mineral Analysis(岩矿测试), 1993, 12(4): 264. [5] GUO Xiao-wei, LI Li(郭小伟, 李 立). Chinese Journal of Analytical Chemistry(分析化学), 1986, 14(2): 151. [6] SUN Han-wen(孙汉文). Beijing: The Science and Technology Publishing House of China(北京: 中国科学技术出版社), 1992. 119. [7] ZHANG Chao-yang, MA Ming-yang, SU Liu-kun(张朝阳, 马名扬, 苏流坤). Chinese Journal of Spectroscopy Laboratory(光谱实验室), 2005, 22(1): 134. [8] SUN Wei-mei, CHEN Rong-yu(孙伟媒, 陈蓉玉). Chemical World(化学世界), 2005, 46(5): 267.
