This standard specifies a method for the determination of aluminum, barium, calcium, iron, mg manganese, nickel, silicon, sodium, titanium, vanadium, and zinc content in uncalcined or calcined petroleum coke by Inductance Coupled Plasma Atomic Emission Spectroscopy (AES). It is suitable for the determination of the above elements in uncalcined or calcined petroleum coke with ash content less than 1%. The method detection range is shown in Table 1. Normative reference documents include test sieves, specifications and test methods for analyzing laboratory water, and petroleum coke inspection methods, etc. After the sample is ashing at 700 ° C, the ash is melted with lithium tetraBoricacid, and the melt is extracted with muriatic acid for measurement. The reagents used are all excellent grade pure, and the water should be secondary water.