Variations in atmospheric PM trace metal content in Spanish towns:: Illustrating the chemical complexity of the inorganic urban aerosol cocktail
Variations in atmospheric PM trace metal content in Spanish towns:: Illustrating the chemical complexity of the inorganic urban aerosol cocktail
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DOI：
10.1016/j.atmosenv.2006.05.074
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发表时间：
2006-11-01
影响因子：
5
通讯作者：
Gibbons, Wes
中科院分区：
文献类型：
--
作者：
Moreno, Teresa;Querol, Xavier;Gibbons, Wes
大多数西班牙城市人口呼吸的空气中含有可吸入的空气悬浮颗粒，平均浓度为30-46 μ g m（-3）（PM10）和20-30 μ g m（-3）（PM2.5）。尽管吸入的城市气溶胶的平均重量通常相似，但是，不同城镇的环境灰尘之间可能存在很大的化学差异，包括一些金属等更具生物活性的元素。在这种情况下，我们比较了源分配的微量金属含量的空气中的PM10和PM2.5收集每天超过1年的时间，在西班牙的6个人口中心：巴塞罗那，阿尔科本达斯，Llodio，韦尔瓦，塔拉戈纳和拉斯帕尔马斯德大加那利岛。总平均微量金属（Sigma TM）PM10和PM2.5含量变化高达约3倍，在Llodio达到最大值Sigma TM 10 811 ng m（-3）和Sigma TM 2.5 503 ng m（-3），Llodio是一个工业但潮湿的场所，PM10质量水平最低，但受到Zn，Pb，Mn，Sn，Ni和Cr的高度污染。相比之下，污染在韦尔瓦，虽然另一个工业影响的网站，而不是强调铜和砷，而巴塞罗那，交通排放和再悬浮有助于一些最高的平均PM10水平在西班牙，有不寻常的Ti，V和Ba的水平上升。这种变化，在每天和每年的平均PM散装化学，特别是在潜在的有毒微量金属集中在较细的气溶胶（如镉，砷，铅，汞和镍），预测PM对居民的健康影响，从不同的城镇是不太可能是相同的。(c)2006爱思唯尔有限公司版权所有。
The majority of the Spanish urban population breathe air containing inhalable ambient airborne particles at average concentrations of 30-46 mu g m(-3) (PM10) and 20-30 mu g m(-3) (PM2.5). Even though the average weight of inhaled urban aerosol is commonly similar, however, there can be large chemical differences between the ambient dusts from different towns, including the more bioreactive elements such as some metals. In this context, we compare the source-apportioned trace metal content of airborne PM10 and PM2.5 Collected daily over a 1-year period from six population centres in Spain: Barcelona, Alcobendas, Llodio, Huelva, Tarragona and Las Palmas de Gran Canaria. Total average trace metal (Sigma TM) PM10 and PM2.5 contents vary by up to a factor of around 3, reaching a maximum of Sigma TM10 811 ng m(-3) and Sigma TM2.5 503 ng m(-3) at Llodio, an industrial but humid site with the lowest PM10 mass levels but high contamination by Zn, Pb, Mn, Sn, Ni and Cr. In contrast, pollution at Huelva, although another industrially influenced site, instead emphasises Cu and As, whereas Barcelona, where traffic emissions and resuspension contribute to some of the highest average PM10 levels in Spain, has unusually raised levels of Ti, V and Ba. Such variations in both daily and annual average PM bulk chemistry, particularly in potentially toxic trace metals concentrated in the finer aerosols (such as Cd, As, Pb, Hg and Ni), predict that PM health effects on resident populations from different towns are unlikely to be the same. (c) 2006 Elsevier Ltd. All rights reserved.