青海省东部地区大气降尘地球化学特征

Geochemical characteristics ofdustfall in the eastern part of Qinghai province

采集了青海省东部地区大气降尘样品,分湟水谷地和黄河谷地对大气降尘中的重金属及F、Se的含量进行统计分析。结果表明,湟水流域大气干湿沉降中各重金属元素含量明显高于黄河流域,这与湟水流域相对密集的城市和工业有关。较高的Pb丰度指示较繁忙的交通活动;较高的Hg、Se丰度和燃煤活动密切相关;Cr、Ni丰度的高低指示金属冶炼活动的强弱。大气干湿沉降物中元素的丰度特征与湟水及黄河流域的人口及工业特征一致。

The eastern area of Qinghai province to collect the atmospheric dust samples were analyzed in Huangshui Valley and the Yellow River Valley reduced heavy metal dust in the air,Se and F.The results showed that the contents of heavy metals in Huangshui River basin subsidence atmospheric dry and wet was significantly higher than that of the Yellow River basin,and the Huangshui River Basin is relatively dense and relevant industrial city.Higher Pb abundance indicates higher traffic activity;higher Hg and Se abundances are closely related to coal combustion;the abundance of Cr and Ni indicates the strength of metal smelting activities.Atmospheric deposition of elements abundance and population and industrial characteristics and the favorable characteristics of the Yellow River basin.