| 青岛沿海大气气溶胶中无机组分在粗、细粒子上的分布 |
| 摘要点击 2238 全文点击 1784 投稿时间：2000-07-23 |
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| 中文关键词 粗粒子 细粒子 青岛沿海地区 季节变化 大气气溶胶 |
| 英文关键词 fine particle coarse particle coastal area seasonal variation Qingdao ambient aerosol |
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| 中文摘要 |
| 在1997-09～1998-08分4次对大气气溶胶进行了监测.结果表明:青岛沿海地区的气溶胶质量浓度多集中于＜2.5μm的细粒子中,同时采暖季节细粒子比例浓度大大高于非采暖季节.SO42-、NH4+、NO3-、K+主要存在于粒径小于2.5μm的细粒子中.Na+、Cl-、Mg2+、Ca2+则主要存在于大于2.5μm的粗粒子中,冬季F-、Cl-、Br-均主要存在于细粒子中,而夏季则主要存在于粗粒子中,表明这3种离子在气溶胶粒径分布中可能受人为燃烧源和温度影响.
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| 英文摘要 |
| Four times measurements of ambient aerosol were conducted from September,1997 to August,1998 at a coastal site of Qingdao.The results indicated that mass concentrations of aerosol mainly exist in fine particles(PM2.5,diameter less than 2.5μm).the proportion of the fine particles in the heating period is much higher than that in the non-heating period.SO42-,NH4+,NO3-,K+ mainly exist in the fine particles while Na+,Cl-,Mg2+,Ca2+ mainly exist in the coarse particle,F-,Cl-,Br- mainly exist in the fine particles in the winter,but in the coarse particles in the summer,which reflects the influence of anthropogenic burning source and atmosphere temperature. |
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