▎ 摘　　要

NOVELTY - Removing metallic lead ions in wastewater comprises (i) dissolving graphene oxide in water, atomizing the solution in an ultrasonic atomizer, passing through tubular furnace, collecting using polytetrafluoroethylene filter and drying to obtain graphene microsphere adsorbent, and (ii) adding graphene microsphere into a certain concentration lead-containing wastewater, adsorbing and reacting at room temperature under specific pH for specific period of time, centrifuging and testing the concentration of the lead ions. USE - The method is useful for removing metallic lead ion in wastewater. ADVANTAGE - The method is simple and suitable for large scale detection, and realizes recycling.