Method for fast and qualitatively screening lead ions

The invention discloses a method for fast and qualitatively screening lead ions. Through sample pretreatment, preliminary screening reaction field selection, preliminary screening reagent configuration, preliminary screening reaction and qualitative analysis steps, the screening of lead ions is completed. On the basis of the characteristics that lead ions can obviously inhibit the G4/hemin compound peroxydase property, and other metal ions cannot obviously inhibit the peroxydase property, the operation is simple, convenient and feasible; the method repeatability is good; the heavy metal lead in the fields of food safety, environment monitoring and the like can be fast screened; the requirement of fast screening the lead ions in daily massive samples can be met. 本发明公开了种快速定性筛查铅离子的方法，经过样品预处理、初筛反应场所的选择、初筛试剂的配置、初筛反应和定性分析步骤，完成对铅离子的筛查；本发明基于铅离子能显著抑制G4/hemin复合物过氧化物酶性，而其他金属离子不能明显抑制其过氧化物酶性特点，操作简便可行，方法重现性良好，能快速筛查出食品安全、环境监测等领域中的重金属铅，能满足日常大批量样品快速筛查铅离子要求。