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本文验证了王水介质中泡塑对金、铊的定量吸附。着重研究了解脱与测定条件。试验确定:解脱剂为0.3%亚硫酸钠-硫脲溶液,解脱后,其蒸干残渣混入含10%碳酸锂之炭粉缓冲剂,铂、铟分别作金、铊内标,交流电弧激发,在28摄谱仪上摄谱。检出限0.3微克,当金、铊含量为1.4×10~(-4)%时,单次摄谱相对标准偏差分别为±17.6%与±20.4%。
This paper verifies the quantitative adsorption of gold and thallium in foam of aqua regia media. Focus on the release and determination of conditions. It was determined that the release agent was a 0.3% sodium sulfite-thiourea solution. After the solution was evaporated, the residue was evaporated to dryness and mixed with a carbon powder buffer containing 10% lithium carbonate. Platinum and indium were used as gold and thallium internal standard, Spectrograph on the spectrograph. The detection limit was 0.3 μg. The relative standard deviations (RSDs) were ± 17.6% and ± 20.4%, respectively, for gold and thallium contents of 1.4 × 10 -4%.