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自1970年Bowen等提出用泡沫塑料吸附卤化物中的汞、金、铁、锑、铊、铼、钼离子以来,泡沫塑料吸附作为一种新型的分离富集手段正受到人们的重视。但单纯用泡沫塑料富集痕量金,回收率不高,易受生产厂家及泡沫塑料型号的影响。李承元采用反相色层泡沫塑料吸附金,发挥萃取与泡沫塑料吸附的长处,减轻上述缺陷,提高金的吸附率,又减少有机溶剂对环境的污染。本文在此工作基础上,利用银作基体改进剂,等温平台石墨炉原子吸收法测定地质样品中痕量金获得较满意结果。
Since Bowen et al. Proposed the adsorption of mercury, gold, iron, antimony, thallium, rhenium and molybdenum ions in the halide by foam in 1970, the adsorption of foam as a new method of separation and enrichment is receiving more and more attention. However, the simple enrichment of trace amounts of gold foam, the recovery rate is not high, susceptible to the impact of manufacturers and foam models. Lee Seong-yuan reversed-phase color foam adsorbed gold, play the advantages of extraction and foam plastic adsorption, reduce the above defects, improve the gold adsorption rate, but also reduce the pollution of organic solvents on the environment. In this work, based on this work, the use of silver as a matrix modifier, graphite furnace atomic absorption spectrometry for determination of trace amounts of gold in geological samples obtained satisfactory results.