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
杨 祥，韩鸿印，陈文武，张新华，汤志勇，金泽祥 . 析相萃取火焰原子吸收法测定矿样中的锌 [J]. 光谱学与光谱分析, 2004, 24(03): 363-365.
YANG Xiang，HAN Hong-yin，CHEN Wen-wu，ZHANG Xin-hua，TANG Zhi-yong，JIN Ze-xiang . Determination of Zinc in Mineral by FAAS after Phase Separation and Extraction . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(03): 363-365.
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