|
|
| [PMID]: | 28599193 |
| [Au] Autor: | Leavey A; Patel S; Martinez R; Mitroo D; Fortenberry C; Walker M; Williams B; Biswas P |
| [Ad] Endereço: | Center for Aerosol Science and Engineering (CASE), Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA. |
| [Ti] Título: | Organic and inorganic speciation of particulate matter formed during different combustion phases in an improved cookstove. |
| [So] Source: | Environ Res;158:33-42, 2017 10. | | [Is] ISSN: | 1096-0953 |
| [Cp] País de publicação: | Netherlands |
| [La] Idioma: | eng |
| [Ab] Resumo: | Residential solid fuel combustion in cookstoves has established health impacts including bladder and lung cancers, cataracts, low birth weight, and pneumonia. The chemical composition of particulate matter (PM) from 4 commonly-used solid fuels (coal, dung, ambient/dry applewood, and oakwood pellets), emitted from a gasifier cookstove, as well as propane, were examined. Temporal changes between the different cookstove burn-phases were also explored. Normalized concentrations of non-refractory PM , total organics, chloride, ammonium, nitrate, sulfate, and 41 particle-phase polycyclic aromatic hydrocarbons (PAHs) were measured using a High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) and a Thermal desorption Aerosol Gas chromatograph (TAG), respectively. Coal demonstrated the highest fraction of organic matter in its particulate emission composition (98%), followed by dung (94%). Coal and dung also demonstrated the highest numbers and concentrations of PAHs. While dry applewood emitted ten times lower organic matter compared to ambient applewood, a higher fraction of these organics was composed of PAHs, especially the more toxic ones such as benzo(a)pyrene (9.63ng/L versus 0.04ng/L), and benzo(b)fluoranthene (31.32ng/L versus 0.19ng/L). Data from the AMS demonstrated no clear trends for any of the combustion fuels over the different combustion phases unlike the previously reported trends observed for the physical characteristics. Of the solid fuels, pellets demonstrated the lowest emissions. Emissions from propane were below the quantification limit of the instruments. This work highlights the benefits of incorporating additional metrics into the cookstove evaluation process, thus enriching the existing PM data inventory. |
| [Mh] Termos MeSH primário: |
Poluentes Atmosféricos/química
Poluição do Ar em Ambientes Fechados/análise
Monitoramento Ambiental
Compostos Inorgânicos/análise
Compostos Orgânicos/análise
Material Particulado/química
|
| [Mh] Termos MeSH secundário: |
Poluentes Atmosféricos/análise
Carvão Mineral
Culinária
Fezes
Material Particulado/análise
Madeira
|
| [Pt] Tipo de publicação: | JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S. |
[Nm] Nome de substância:
| 0 (Air Pollutants); 0 (Coal); 0 (Inorganic Chemicals); 0 (Organic Chemicals); 0 (Particulate Matter) |
| [Em] Mês de entrada: | 1708 |
| [Cu] Atualização por classe: | 171120 |
[Lr] Data última revisão:
| 171120 |
| [Sb] Subgrupo de revista: | IM |
| [Da] Data de entrada para processamento: | 170610 |
| [St] Status: | MEDLINE |
| |
|
|
