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中国有色金属工业公司矿产地质研究院对聚氨酯泡沫吸附金的性能进行了充分的试验研究。结果表明,泡塑在王水介质中对金具有很强的吸附能力和很高的吸附效率。它对纳克量金的吸附回收率仍可达95％以上。在此基础上,拟订了用泡塑快速吸附富集的高灵敏度化学光谱测金法。取10克样品,经焙烧后,用1+1王水微沸分解1小时,在小于10％酸度和温度低于35℃的条件下,采用不控速的快速过滤吸附法富集金。吸附后的泡塑经10％王水溶液洗涤,并经600℃炭化
China Nonferrous Metals Industry Corporation Institute of Mineral Geology of polyurethane foam gold adsorption performance of a full experimental study. The results show that foam has a strong adsorption capacity and a high adsorption efficiency for gold in aqua regia media. Its adsorption capacity of nanograms of gold can still recover more than 95%. On the basis of this, a high sensitivity chemical spectroelectrometry method was developed for rapid adsorption and enrichment with foam. Ten grams of the sample was taken, and after roasting, the solution was boiled with 1 + 1 aqua regia for 1 hour, and gold was enriched by uncontrolled rapid filtration and adsorption under the conditions of acidity less than 10% and temperature lower than 35 ° C. Adsorbed foam by 10% aqueous solution of Wang washed, and 600 ℃ carbonization