活性炭吸附原子吸收法测定金
1．方法提要
称取一定量（视样品的均匀性而定）的样品。用HNO3-KClO3硝化除炭、硫以及有机物。最后用王水溶解；动物胶凝聚沉淀硅酸后，在稀王水介质中，用布氏漏斗过滤分离残渣。AuCl4－被装有活性炭-纸浆吸附柱动态吸附，与绝大部分基体组分分离。活性炭经灰化后，用王水溶解，用原子吸收法测定矿石中的金。
本法适用于一般试样中ω（Au）/10-6=0.01～100的测定。
Determination of gold by active carbon adsorption atomic absorption spectrometry
1 Methods Summary
To take a quantity (depending on the homogeneity of the sample). Removal of carbon, sulfur and organic matter by nitrification with HNO3-KClO3. Finally dissolved in aqua regia; animal glue precipitation silicate, in the dilute aqua regia medium, separating the residue with Buchner funnel filter. AuCl4 - activated carbon - pulp adsorption column dynamic adsorption, and most of the matrix components separation. The activated carbon by ashing after dissolved by aqua regia, determination of gold in ore by atomic absorption spectrometry.
This method is suitable for the determination of omega (Au) /10-6=0.01 ~ 100 in general samples.
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