摘要
本文研究在盐酸(40％)、氢溴酸(8％)和碘化钾(0.15％)介质中,在抗坏血酸存在下(抑制铁干扰),用甲基异丁基酮(MIBK)萃取样液中的金、银、镓、铟、铊和碲,然后加入环己烷,将上述六种元素反萃取到硫脲液(4.5％)中,用火焰原子吸收光谱法在水相中测定。各元素测定精密度为4.1～6.7％,回收率为92～111％,适用于岩石、土壤等地质样品中六个元素的同时测定。
This paper brings a method by which,gold,silver,gallium,indium, thallium and tellurium can be extracted from the same sample solution with MIBK through the media of hydrochloric acid(40%), hydrobromic acid (8%) and potassium iodide(0.15%)in the presence of ascorbic acid(to eliminate iron interference). These elements are anti-extracted from MIBK with thiourea solution (4.5%)in the presence of cyclohexane, then they are determined by atomic absorption spectrometry in water phase.The relative standard deviation of these elements is 4.1-6.7%, and the recovery is 92-111%.The method can be used to determine gold, silver, gallium, indium, thallium and tellurium in sample of rocks and soils.
出处
《黄金》
CAS
北大核心
1991年第5期46-51,共6页
Gold
关键词
地质物料
光谱法
稀散元素
金
银
gold, silver, gallium, indium, thallium and tellurium
extraction-anti-extraction
atomic absorption
geological materials.
