Comparative Study on Two Pretreatment Processes for Chemical Phase Analysis of Gold in Geological Samples by Atomic Absorption Spectrometry

Figure 1

The histogram for the percentage of gold in each chemical phase (I: ultrasonic centrifugation; II: cyclotron oscillation; WSS: water-soluble state; IECAS: ion exchange and clay adsorption state; OMBS: organic matter bound state; IMOBS: iron-manganese oxide bound state; NSNS: naked or seminaked state; CBS: carbonate bound state; SBS: sulfide bound state; ISS: insoluble silicate state).