Abstract Non-ion surface active agent can be separated from its solution of water by heating to its cloud point. A new method for the determination of zinc in mineral samples by flame atomic absorption spectrophotometer after phase separation and extraction making use of its cloud point was studied in this paper. The conditions of phase separation and extraction such as using Triton X-100 as phase separation agent, and octanol to drop the cloud point, and the influence of acidity and the number of times for oscillating were discussed. The detection limit was 0.005 μg·mL-1. This method has been applied to the determination of zinc in ores with satisfactory results.
Key words:Phase separation and extraction;Flame atomic absorption spectrophotometer;Zinc
YANG Xiang,HAN Hong-yin,CHEN Wen-wu, et al. Determination of Zinc in Mineral by FAAS after Phase Separation and Extraction [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(03): 363-365.
[1] David D J. Analyst.,1983,655: 1958. [2] Mahan C A,Holcombe J A. Spectrochim. Acta,Part B,1992, 47B(13): 1483. [3] ZHOU Fa-lian,LIU Dong-hua(周发连,刘冬华). Chinese Journal of Analytical Chemistry(分析化学),1989, 17(2): 808. [4] SONG Jin-ru,WU Quan-sheng(宋金如,吴全胜). Physical Testing and Chemical Analysis,Part B: Chemical Analysis(理化检验(化学分册)),1992, 28(4): 199. [5] SUN Wei-lin,ZHANG Sun-wei,QI Wen-bin et al(孙维林,张孙伟,戚文彬等). Chinese Journal of Analytical Chemistry(分析化学),1993, 21(1): 93. [6] CUI Kun-yan,ZENG Feng,ZHAO Gen-zhen(崔昆燕,曾 锋,赵亘珍). Physical Testing and Chemical Analysis,Part B: Chemical Analysis(理化检验(化学分册)),1994, 30(4): 204. [7] ZHOU Fa-lian,GAO Yan-min(周发连,高艳敏). Chinese Journal of Analytical Chmesitry(分析化学),1992, 20(7): 806. [8] ZHOU Fa-lian,XIE Chun-wei(周发连,谢春伟). Physical Testing and Chemical Analysis,Part B: Chemical Analysis(理化检验(化学分册)),1989, 25(2): 68. [9] HU Chao-yong,ZHAO Zhong-yi,JIN Ji-hong et al(胡超涌,赵忠一,金继红等). Chinese J. of Analytical Laboratory(分析实验室),1998, 17(3): 50. [10] HU Chao-yong,ZHAO Zhong-yi,JIN Ji-hong et al(胡超涌,赵忠一,金继红等). Rock and Mineral Analysis(岩矿测试),1998, 17(2): 95. [11] ZHOU Fa-lian,HUANG Xiao-feng(周发连,黄晓峰). Rock and Mineral Analysis(岩矿测试),1993, 12(2): 119. [12] GUO Rong,ZHU Wen-qing(郭 荣,朱文庆). Chemical Journal of Chinese Universities(高等学校化学学报),1995, 16(7): 1104.