Graphite Furnace Atomic Absorption Spectrophotometric Method for Determination of Trace Gold in Geochemical Exploration Samples

After high temperature roasting, dissoluting by the aqua regia, plastic foam separating and enriching in concussion, thiourea and hydrochloric acid solution releasing, using ascorbic acid as a matrix modifier, test samples content gold were analyzed by using graphite furnace atomic absorption spectrometer. Through the contrast of each analyzing experimental process factors, the optimal analytical conditions were found, the accuracy of test results could be ensured.