论文部分内容阅读
本文提出用o.4％硫脲溶液解脱泡沫塑料吸附金,解脱液可直接用火焰法或石墨炉法测定ppb～ppm含量的金,测定范围宽,应用范围广。回收率在97～110％之间,灵敏度为2.5×10~(-11)g/l％,定量下限3ppb,相对标准偏差为6.1％。 目前,广泛采用火焰原子吸收法测定ppm含量金,无焰原子吸收法测定ppb含量金,火焰法和无焰法对金的富集分离。
In this paper, it is proposed to release foam adsorbent gold with o.4% thiourea solution. The liberation solution can directly measure ppb ~ ppm gold by flame method or graphite furnace method. The determination range is wide and the application range is wide. The recoveries ranged from 97 to 110% with a sensitivity of 2.5 × 10 ~ (-11) g / l% and a lower limit of quantitation of 3 ppb with a relative standard deviation of 6.1%. At present, widely used flame atomic absorption method for the determination of gold content, flame atomic absorption spectrometry ppb gold content, flame method and flame-free enrichment separation of gold.