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简述了大气中铅污染的主要来源、铅的毒性及其在人发、血液及尿中的参考值。采用双膜法收集了大气样品，并用阳极溶出伏安法测定了北大园区内铅的水平，结果表明，大气中铅主要存在于＜10m的细粒子中。北大校园内大气中铅的浓度低于国家规定的血级地区标准。
The main source of Pb pollution in the atmosphere, the toxicity of lead and its reference value in human hair, blood and urine are briefly described. Atmospheric samples were collected by the double-membrane method and the level of lead in Peking University Park was determined by anodic stripping voltammetry. The results show that the atmospheric Pb mainly exists in the fine particles <10m. Peking University campus atmosphere of lead concentrations lower than the national blood-level regional standards.