Atmospheric carbonaceous aerosols over grasslands of central Europe and a Boreal forest

被引:18
作者
Alves, C
Pio, C
Carvalho, A
Santos, C
机构
[1] Inst Politecn Viana Castelo, Escola Super Tecnol & Gestao, P-4900348 Viana do Castelo, Portugal
[2] Univ Aveiro, Dept Ambiente & Ordenamento, P-3810193 Aveiro, Portugal
[3] Escola Super Tecnol & Gestao Oliveira Hosp, P-3400124 Oliveira do Hospital, Portugal
关键词
particulate matter; organic and black carbon; organic compounds; photo-oxidation products; water-soluble organic carbon; dichloromethane-extractable organic carbon;
D O I
10.1016/j.chemosphere.2005.07.004
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A labour-intensive analytical technique was applied to atmospheric particulate matter samples collected in a German urban/industrial influenced grassland location (Melpitz) and in a Finnish forest area (Hyytiala) in order to achieve a detailed chemical speciation of the organic content. The representative nature of the solvent and water-extractable fractions was determined. The organic compounds identified in the solvent extracts are represented by primary compounds with both anthropogenic and biogenic origin, which mainly derive from the vegetation waxes and from petrogenic sources. Secondary products resulting from the oxidation of volatile organic compounds were also detected. The German meadow presented the highest levels of sugars and acidic compounds in the water extracts, whilst polyols were the most abundant class in the Finnish forest. The major compounds of these classes were malic acid, mannitol, arabitol, glucose and sucrose. Levoglucosan was also found in the water extract. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:153 / 164
页数:12
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