摘要
试样经650℃灼烧,水-盐酸-硝酸(4+3+1)分解,动物胶凝聚硅酸后,用活性炭动态吸附金,再经灰化,提取,制成盐酸(1+11)溶液,将试液吸入空气-乙炔火焰中,用原子吸收分光光度计测定金的吸光度,从而读出浓度。在已知金含量的基础上,加入不同的金标准品后,作回收试验,根据所得算得金的回收率在97.0%～100.5%之间。本方法适用于岩石、矿物中ω(Au)/10-6=0.05-100的测定。
Sample was combusted at 650℃, and then dissolved by aqua （the proportion： water： hydrochloric acid ： nitric acid =4： 3： 1）, after gelatin condensed silicic acid, adsorbing gold by activated carbon, and then by as hing, extraction, hydrochloric acid （ 1 ＋ 11） solution modulated, the test solution inhalation of air - acetylene flame in atomic absorption spectrophotometer using the absorbance of gold, which read out the concentration. Known gold content, based on the gold standard with different post for recovery test, the basis of the claim to the recovery of gold in 97.0% - 100.5%. This method is applicable to rocks, minerals ω （Au） / 10-6 =0.05 -100 determination.
出处
《有色矿冶》
2012年第6期52-53,共2页
Non-Ferrous Mining and Metallurgy
关键词
原子吸收分光光度计
活性炭
金
水-盐酸-硝酸(4+3+1)
atomic absorption spectrophotometer
activated carbon
gold
water - hydrochloric acid - nitric acid（4＋3＋1）
