东海海洋大气颗粒物中重金属的来源及入海通量

2006～2007年,对杭州湾以南的东海海域进行了春、夏、秋、冬4个航次的海洋大气调查,分析了大气颗粒物中重金属元素（Cu、Pb、Zn、Cd）的含量,根据调查结果,采用富集系数法对重金属的来源进行了初步分析,对干沉降入海通量进行了估算.结果表明,调查海域海洋大气颗粒物中的Cu、Pb、Zn、Cd含量相对于地壳和海水均表现...

Source and Air-sea Fluxes of Heavy Metals in the Atmospheric Particles of East China Sea

From 2006 to 2007, four surveys for marine atmosphere in East China Sea were carried out included different seasons (spring, summer, autumn and winter). Based on the survey data of heavy metals in marine atmospheric particles, analyzed the source of heavy metals by the calculation of Enrichment Factors, calculated the air-sea fluxes via dry deposition. The results showed, comparing with the crustal and seawater, the heavy metals including Cu, Pb, Cd and Zn were highly concentrated, mainly from the pollutants of human activities. The fluxes of heavy metals via dry deposition were Zn 10.92 mg/(m2 x a)] > Pb 2.299 mg/(m2 x a)] > Cu 1.611 mg/(m2 x a)] > Cd 0.017 mg/(m2 x a)]. The fluxes of heavy metals in winter were highest,the summer and autumn were lower. The input of Cu, Pb, Zn and Cd from atmosphere to sea via dry deposition was 2 376 t, nearly 13% compared with the input of The Changjiang River (Yangtze River).