Determination of Gold Content in Cicc Ore Using a Closed Water Bath Sample-Loaded Carbon Foam Plastic-Inductively Coupled Plasma Optical Emission Spectrometric Method

A polycarbonate sample bottle sealed water bath with digestion solution was used. In the digestion solution NH₄HF₂ and tartaric acid coordinated with other interfering metal cations were added. A loaded carbon foam plastic was added to adsorp gold. After a series of treatment, the sample was determined by inductively coupled plasma optical emission spectrometry(ICP-OES). The detection limit was 0.005 09 μg/g, the determination limit was 150 μg/g, relative standard deviation(RSD) was less than 5.77%, the interference of Ag, Sb, Fe was eliminated. Through the determination of gold ore reference materials in different contents, the results were of high accuracy, so the method can fully meet the requirements the analysis of gold ore.