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What is Fire Assay Procedure for Gold Analysis about?

The document describes a fire assay procedure for trace gold analysis using atomic absorption spectroscopy. A prepared sample is fused with reagents and yields a lead button containing precious metals, including gold. The lead button is then cupelled to produce a silver bead containing gold. The silver bead is dissolved in nitric acid and hydrochloric acid to form a solution where the amount of gold is determined by atomic absorption spectrometry. The method is capable of detecting gold between 0.002 and 1

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h

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EN