渤海大气气溶胶元素组成及物源分析

利用电感耦合等离子体-光发射光谱法(ICP-OES)分析了2000年夏季渤海大气气溶胶样品,给出了渤海气溶胶污染物浓度分布特点,结合气象资料和富集因子进行了元素物源分析.分析结果表明,辽东湾的污染程度高于其他海区,气溶胶中含量最高的元素是Zn(1638ng/m3),含量最低的是V(2ng/m3).渤海气溶胶中Pb、Zn、Cu和Ni等具有较高的富集因子.辽东湾Pb的富集因子达4000以上,Zn的富集因子普遍大于其他海区.Pb、Mn、Cu、V等含量的相对大小与同期北京的分析结果一致.综合分析表明,渤海大气严重受到陆地人为排放污染物的影响.

Preliminary study on Element composition and source apportionment of atmospheric aerosol over Bohai Sea

Atmospheric aerosol collected over Bohai Sea in 2000 was analyzed by Inductively Coupled Plasma Optical Emission Spectroscopy to find air pollution feature in Bohai Sea. Enrichment factor and meteorological data were used to find out the source apportionment of aerosol elements. Liaodong Bay is more heavily polluted than other areas of Bohai Sea. Zn is the most abundant element in aerosols collected in this area, with the concentration of 1638ng/m {3 }, and V is the most poor element, with the concentration of 2ng/m {3 }. Pb, Zn, Cu and Ni all have high enrichment factor in the Bohai Sea, especially Pb, more than 4000 in Liaodong Bay. The enrichment factor of Zn in Liaodong Bay is higher than in other sea areas. The relative size of concentrations of Pb, Mn, Cu and V is as same as the analysis result of aerosols sampled in Beijing. Both the meteorological data and enrichment factor show that Bohai Sea is significantly polluted by man made air pollutions.