Time-resolved characterization of primary emissions from residential wood combustion appliances.
Environ Sci Technol
; 46(20): 11418-25, 2012 Oct 16.
Article
em En
| MEDLINE
| ID: mdl-22970884
ABSTRACT
Primary emissions from a log wood burner and a pellet boiler were characterized by online measurements of the organic aerosol (OA) using a high-resolution time-of-flight aerosol mass spectrometer (HR-TOF-AMS) and of black carbon (BC). The OA and BC concentrations measured during the burning cycle of the log wood burner, batch wise fueled with wood logs, were highly variable and generally dominated by BC. The emissions of the pellet burner had, besides inorganic material, a high fraction of OA and a minor contribution of BC. However, during artificially induced poor burning BC was the dominating species with â¼80% of the measured mass. The elemental OC ratio of the OA was generally found in the range of 0.2-0.5 during the startup phase or after reloading of the log wood burner. During the burnout or smoldering phase, OC ratios increased up to 1.6-1.7, which is similar to the ratios found for the pellet boiler during stable burning conditions and higher than the OC ratios observed for highly aged ambient OA. The organic emissions of both burners have a very similar HC ratio at a given OC ratio and therefore fall on the same line in the Van Krevelen diagram.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Culinária
/
Poluentes Atmosféricos
/
Material Particulado
/
Fuligem
Idioma:
En
Revista:
Environ Sci Technol
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Suíça