Safe and efficient coal-series solid waste scattered metal determination method

The invention relates to a safe and efficient coal-series solid waste rare metal determination method, and belongs to the field of coal-series solid waste rare metal recovery. The method comprises the following steps: drying and crushing the coal-series solid waste, adding mixed acid which comprises nitric acid, hydrogen fluoride and chloric acid, and then loading into an acid-driving device to pre-digest and volatilize organic components; cooling, adding hydrogen peroxide to improve the oxidability of the digestion environment, putting into a sealed container, and transferring into a microwave digestion instrument to perform heating digestion; and cooling, removing contents, putting into an acid-driving device, driving acid into the container until the digestion solution is nearly dry, diluting the digestion solution by using dilute nitric acid, fixing the volume, and filtering the solution by using a microfiltration membrane, thereby completing digestion of the scattered metals in the coal-series solid wast