Study on the Determination Technology of Trace Gold in Geochemical Exploration Samples by Graphite Furnace
In order to achieve the determination of trace gold in graphite furnace in geochemical exploration samples,relevant research has been carried out on its determination technology.In the presence of Fe3+,gold is adsorbed by foamed plastics in aqua regia with a mass fraction of 10%;resolved in a thiourea solution with a mass fraction of 1.2%;the maximum power heating and graphite furnace atomic absorption spectroscopy are used for the determination.Through the analysis of the measurement results,it is found that the detection limit of this method is low,and the precision and accuracy of the measurement results can meet the requirements of national first-class standard substance analysis and verification,ensuring that the measurement results are consistent with the true standard values.
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