Coal is an important fossil energy that is widely used in power, steel, chemical and other industries. However, coal contains a wide variety of elements with different contents, which brings many challenges to the utilization of coal and environmental protection. For the quality control of coal, only by accurately grasping the element content in coal can the quality of coal be effectively controlled, the utilization efficiency of coal can be improved, and the waste of resources can be reduced. At the same time, when coal is burned, the release of nitrogen, sulfur and other elements can lead to environmental problems such as acid rain and smog. If the element content in coal can be accurately determined in advance, corresponding measures can be taken to reduce the emission of these harmful substances, so as to achieve the purpose of protecting the environment. Attachment download