Tracers of wood smoke

被引:106
作者
Khalil, MAK
Rasmussen, RA
机构
[1] Portland State Univ, Dept Phys, Portland, OR 97207 USA
[2] Oregon Grad Inst, Dept Environm Sci & Engn, Beaverton, OR 97501 USA
关键词
methyl chloride; CH3Cl; receptor model; CMB; regional air pollution;
D O I
10.1016/S1352-2310(02)01014-2
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Smoke from wood burning is a significant source of air pollution in many parts of the world. When several sources simultaneously cause air pollution, it is often difficult to determine how much comes from wood burning. Wood smoke has unique chemical characteristics that can be used as indicators, including elemental composition, particularly potassium and chlorine, the ratios of organic and elemental carbon, and gases such as methyl chloride. This paper deals with formulating and applying the chemical mass balance approach incorporating both gas- and aerosol-phase tracers to a study carried out at Olympia-Lacey in Washington. In this study, three types of tracers were measured simultaneously and used to estimate wood smoke pollution during Winter, namely elemental composition and organic carbon in the particle phase and methyl chloride in the gas phase. The results from the different tracers are found to be in agreement. The air pollution at the study site was dominated by wood smoke mostly from low-temperature combustion (about 80%), with additional but smaller contributions from oil furnaces (15%), automobiles (4%) and occasionally from other nearby sources. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1211 / 1222
页数:12
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