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随着地球化学找矿的需要,对于岩石矿物中金的测定,要求的检测极限愈来愈低。溶剂萃取-原子吸收光谱法具有较高的选择性和灵敏度,是较好的测试手段。近年来,对亚砜的萃取性能的研究引起了人们的极大兴趣,文献报导了亚砜的性能及萃取金属元素的行径。本文拟定了在5%的王水介质中,用0.10M亚砜-乙酸丁酯萃取金,以空气-乙炔火焰原子吸收测定。测定范围:0.0x～x克/吨,分析结果能满足地质要求。
With the need of geochemical prospecting, the limit of detection required for the determination of gold in rock minerals is getting lower and lower. Solvent extraction - atomic absorption spectrometry has high selectivity and sensitivity, is a good test means. In recent years, the research on the extraction performance of sulfoxide has aroused great interest. The literature reports on the performance of sulfoxide and the extraction of metallic elements. In this paper, we propose to extract gold with 0.10M sulfoxide - butyl acetate in 5% aqua regia solution and determine the content by air - acetylene flame atomic absorption spectrometry. Measurement range: 0.0x ~ xg / ton, the analysis results to meet the geological requirements.