Size distribution of atmospheric particulate ionic species at a coastal site in Portugal
Size distribution of atmospheric particulate ionic species at a coastal site in Portugal
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葡萄牙沿海地区大气颗粒离子物种的尺寸分布
DOI：
10.1590/s0100-40422007000800027
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Patrícia Barbedo
中科院分区：
文献类型：
--
作者：
C. Alves;C. Pio;Eduarda Campos;Patrícia Barbedo
3、分别。结果表明，SO 42和NH 4 +在细粒级2）中的存在是一致的，这可能是由于来自农业活动或邻近化工厂的氨的可利用性较大。在其余时间内，气溶胶呈酸性，主要以硫酸氢铵的形式存在（NH 4 + /SO 42摩尔比= 0.5-1.25）。在海洋气团的主要或排他性影响下收集的样品基本上由富含海盐的粗颗粒组成，而对于大陆起源的气团，水溶性离子物种在精细模式中的贡献更为明显。
-3 , respectively. The results show that SO 4 2and NH 4 + were consistently present in the fine fraction 2), possibly due to greater availability of ammonia coming from agricultural activities or from the neighbouring chemical industrial complex. During the remaining periods, the aerosol was found to be somewhat acidic and predominantly in the form of ammonium bisulphate (NH 4 + /SO 4 2molar ratios = 0.5-1.25). Samples collected under a major or exclusive influence of maritime air masses were essentially constituted by coarse particles with enrichment in sea salt, while for air masses of continental origin the contribution of water-soluble ionic species in the fine mode was more pronounced.