Study on Microwave Digestion Technique of Granite with High Pressure Vessle

The digestion relation of heating time,temperature and pressure for acids is discussed in closed container under microwave field.Some granite samples were digested by microwave in 100 ml closed container.The results show that the best acid to digest granite samples is a combination of HNO3 and HF,0.5 g sample powder can be digested completely in 21 minutes,and that the maximum sample mass is 2.0 g using 100 ml closed container.

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