Repositorio
Institucional

Ruiz-Rudolph, Pablo

Elisa Quinteros, Maria

Blanco, Estela

Sanabria, Janeet

Rosas-Diaz, Felipe

Blazquez, Carola A.

Ayala, Salvador

Pablo Cardenas-R, Juan

Stone, Elizabeth A.

Sybesma, Keely

Maria Delgado-Saborit, Juana

Harrison, Roy M.

Spatio-temporal distribution of particulate matter and wood-smoke tracers in Temuco, Chile: A city heavily impacted by residential wood-burning

PERGAMON-ELSEVIER SCIENCE LTD

ATMOSPHERIC ENVIRONMENT

en

Temuco, like most Southern Chile cities, has a long-standing air pollution problem due to residential wood heating. Here, we study the temporal and spatial distribution of PM2.5 and the biomass-burning tracers levoglucosan and water soluble potassium (K-sol). PM2.5 samples were collected at 40 sites throughout the city and sampled four times in four different sessions between 2017 and 2018. Large concentrations were observed for all species, particularly in winter. Signs of spatial and temporal correlation were observed from multilevel models for the different concentrations and ratios. Ratios of levoglucosan and K-sol to PM2.5 were lower in summer. Spatial clustering was observed both from spatial autocorrelation tests and kriging, with clusters of higher ratios for of all three species (comparing rotating to central site) observed in some neighborhoods. Clusters correlated with lower socioeconomic status (SES), which may reflect population density and lower quality stoves. Clusters of higher K-sol to PM2.5 ratios in some neighborhoods were moderately correlated with higher SES, which may reflect the use of better-quality stoves (e.g., pellets). The current work provides a case study and example of the investigation of wood burning as an air pollution source in a city where many inhabitants use wood as a fuel for heating and cooking. It reveals key temporal and spatial patterns which can assist the design of mitigation strategies.

2023

artículo original

10.1016/j.atmosenv.2022.119529

PDF

Kriging

Moran's I

Levoglucosan

Soluble potassium

Pellets

Clustering

Wood smoke

Biomass burning

Ciencias Ambientales y Ecología

Meteorología y Ciencias Atmosféricas

kriging

Yo de Morán

levoglucosano

Potasio soluble

Pellets

Agrupación

Humo de madera

Quema de biomasa

artículo original

versión publicada

metadata

metadata

WOS:000928268300002

1352-2310

Ciencias Ambientales y Ecología

Meteorología y Ciencias Atmosféricas

ANID CONICYT DPI20140093

UKRC DPI20140093

CIDEGENT/2019/064

CONICYT