黄海海域大气气溶胶特征及重金属的大气输入量研究

Study on the characteristics of the aerosol and atmospheric flux of the heavy metals over the Yellow Sea

分别于１９９５、１９９６两年的春、夏两季在黄海千里岩采集６６个大气气溶胶样品，测定了１６种金属元素的浓度，讨论了其浓度的变化及其来源，并初步估算了大气气溶胶中这些重金属在黄海海域的沉降通量。结果表明，黄海海域大气气溶胶中大多数元素有明显的季节变化，春季的浓度大于夏季，这与大气颗粒物的浓度是一致的；黄海海域大气尘土的年沉降量为（６０～９００）×１０１０ｇ／ａ，占该海域河流每年的泥沙总输入量的４％～３８％。

The aerosol samples collected at Qianliyan in springs and summers of 1995 and 1996 were analyzed by GAAS and/or ICP-AES for 16 metals, of which the variations of the concentration and the sources were discussed, and of which the atmospheric fluxs entering the Yellow Sea were also estimated primarily. The results indicated that the most elements in the aerosol showed obviously seasonal variations that agreed well with the concentration of the atmospheric particles over Qianliyan, that the concentrations in spring were much higher than in summer. The total atmospheric deposition of the crust dust on the whole Yellow Sea basin was (60～900)×10 10 g/a, which accounts for 4%～38% of the total river carried particulate matters.