An air quality monitoring station has been set up in the urban center of the Nanhai district of Foshan City, in order to understand the statement of the atmospheric pollution from lead. Gravimetric method was adopted to determine the contents of atmospheric particulate matter, and ICP-MS method was adopted to determine the contents of lead in atmospheric particulate matter. Here are the results as follows:the average values of TSP, PM10 and PM2. 5 were 150 ug/m3 ,99 ug/m3 and 67 ug/m3 , the average values of lead in TSP, PM10 and PM2. 5 were 214 ng/m3 ,175 ng/m3 ,156 ng/m3 . It is concluded that yhe concentration of lead in the atmosphere reached the Secondary National Standard of Air Environmental Quality in the urban area of Nanhai. Mean-while, comparing with other cities in the Delta-Region of the Pearl River, the content of lead in the atmosphere was of a medium level. Lead in the atmosphere, which most often came from vehicle exhaust, was mainly distributed to PM2. 5 .%为了解佛山市南海城区环境空气中铅污染现状,在南海城区中心设置空气质量监测点,采用重量法和电感耦合等离子体质谱法分别对空气颗粒物及不同粒径颗粒物的铅含量进行定量分析,测定结果为:TSP、PM10、PM2.5平均浓度分别是150 ug/m3、99 ug/m3、67 ug/m3,其中铅平均浓度分别是214 ng/m3、175 ng/m3、156 ng/m3.结论为:南海城区环境空气中的铅浓度达到国家环境空气质量二级标准,铅污染水平处于珠江三角洲的中游;大气中的铅主要分布在PM2.5中,机动车尾气是其主要来源.
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