摘要
研究贵阳市大气气溶胶中金属的富集程度,选用A l、Fe、Mn作参比元素,用富集因子讨论判断自然和人为的来源;在可吸入颗粒物粒径范围内(dp<10μm),贵阳市区大气气溶胶粒子浓度分布为双峰型,峰值出现在1.0μm左右(积聚粒子区)和6.0μm左右(粗粒子区,)而且出现大粒径区峰值小于小粒径区峰值的趋势。
This paper studies the enrichment degree of metals in atmospheric aerosols of Guiyang City. It chooses Al, Fe, Mn as comparable dements,with enrichment factors judge the natural and man-made sources;the particle concentration distribution of atmospheric aerosols in Guiyang City proper is bimodal with one peak at 1.0μu （ accumulative particles） and another peak at 6. 0μm（ coarse particles） in diameter less than 10μm. Morover, it takes on the trend that the peak value of big particle diameter is less than that of the small particle diameter.
出处
《贵州科学》
2006年第2期28-33,共6页
Guizhou Science
基金
贵州省跨世纪人才工程资助项目
黔科合人字(2000)9807号
国家自然科学基金资助项目(20067001)
关键词
大气气溶胶
粒径分布
化学成分
富集特征
atmospheric aerosols
particle diameter distribution
chemical ingredient
enrichment characteristics
