分光光度法测定树叶上的铅

Determination of Lead by Spectrophotometry

采用分光光度法测定了树叶上的铅的含量，结果表明，空气中铅污染的主要来源是汽车尾气，离马路愈近，车流量愈大。

Determination of lead content on leaf by spectrophotometry.It′s result shows:the lead pollution in air is from automobile tail-gas mainly.The nearlier tree away from street,the more trafficis,the greater the lead content on leaves.