Analysis and Research of Graphite Digestion Method and Electrothermal Plate Digestion Method
The digestion of inorganic experimental samples generally requires the use of electric heating plate.Now with the faster and faster economic development,there are already a lot of equipment for processing digestion on the market.In this study,the graphite digestion method and the electrothermal plate digestion method were used to analyze and compare the soil samples.The national standard soil numbers GSS-31 and GSS-33 were used to determine the contents of heavy metal elements such as copper,lead,zinc and nickel.The repeatability,accuracy and factors affecting the results of the two digestion methods were compared to provide reference for sample pre-treatment digestion.