Airborne PCDD/F profiles in rural and urban areas of Buenos Aires Province, Argentina

Passive air samplers were deployed in 18 rural and urban locations in the densely populated Buenos Aires district to investigate airborne polychlorinated dibenzo-p-dioxin and polychlorinated-dibenzofuran (PCDD/Fs) profiles, sources and spatial patterns. Atmospheric concentrations reported as total t...

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Detalles Bibliográficos
Autores principales: Cappelletti, Natalia Elsa, Astoviza, Malena Julia, Migoya, María Carolina, Colombo, Juan Carlos
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Naturales
Química
Polychlorinated dibenzo-p-dioxin
Polychlorinated-dibenzofuran
Passive air samplers
Buenos Aires
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/102876
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-102876
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Química
Polychlorinated dibenzo-p-dioxin
Polychlorinated-dibenzofuran
Passive air samplers
Buenos Aires
spellingShingle Ciencias Naturales
Química
Polychlorinated dibenzo-p-dioxin
Polychlorinated-dibenzofuran
Passive air samplers
Buenos Aires
Cappelletti, Natalia Elsa
Astoviza, Malena Julia
Migoya, María Carolina
Colombo, Juan Carlos
Airborne PCDD/F profiles in rural and urban areas of Buenos Aires Province, Argentina
topic_facet Ciencias Naturales
Química
Polychlorinated dibenzo-p-dioxin
Polychlorinated-dibenzofuran
Passive air samplers
Buenos Aires
description Passive air samplers were deployed in 18 rural and urban locations in the densely populated Buenos Aires district to investigate airborne polychlorinated dibenzo-p-dioxin and polychlorinated-dibenzofuran (PCDD/Fs) profiles, sources and spatial patterns. Atmospheric concentrations reported as total toxic equivalents (TEQs), 2378-substituted (Σ<sub>17</sub>PCDD/F) and 4–8 homologous groups (Σ<sub>4–8</sub>PCDD/F) were highly variable and significantly correlated to urban scale. The rural average (3.0±2.7 fg TEQm<sup>−3</sup>)was thirty times less than metropolitan values (90±51 fg TEQm<sup>−3</sup>),with urban cluster (5.4±4.0 fg TEQm<sup>−3</sup>) and urbanized area (33±50 fg TEQm<sup>−3</sup>) in an intermediate position. A rural outlier exhibited the highest TEQ values (295–296 fg TEQ m<sup>−3</sup>) suggesting a local source. Principal component analyses (PCA) performed for Σ<sub>17</sub>PCDD/F and Σ<sub>4–8</sub>PCDD/F to identify source contributions showed more significant results for homologue groups compared to 17 congeners (83 and 45% of total variability explained, respectively) pointing to dominant diesel emissions enriched in TeCDF in rural areas, and open burning and industrial sources characterized by TeCDD, PeCDD contributing most in urbanized and metropolitan areas. Homologue group PCA also performed better clustering samples according to sources and TEQ concentrations. The PCDD/Fs profile of the rural outlier dominated by HxCDF and HpCDD/F showed a typical municipal incineration signature confirming the presence of local source.
format Articulo
Preprint
author Cappelletti, Natalia Elsa
Astoviza, Malena Julia
Migoya, María Carolina
Colombo, Juan Carlos
author_facet Cappelletti, Natalia Elsa
Astoviza, Malena Julia
Migoya, María Carolina
Colombo, Juan Carlos
author_sort Cappelletti, Natalia Elsa
title Airborne PCDD/F profiles in rural and urban areas of Buenos Aires Province, Argentina
title_short Airborne PCDD/F profiles in rural and urban areas of Buenos Aires Province, Argentina
title_full Airborne PCDD/F profiles in rural and urban areas of Buenos Aires Province, Argentina
title_fullStr Airborne PCDD/F profiles in rural and urban areas of Buenos Aires Province, Argentina
title_full_unstemmed Airborne PCDD/F profiles in rural and urban areas of Buenos Aires Province, Argentina
title_sort airborne pcdd/f profiles in rural and urban areas of buenos aires province, argentina
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/102876
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AT migoyamariacarolina airbornepcddfprofilesinruralandurbanareasofbuenosairesprovinceargentina
AT colombojuancarlos airbornepcddfprofilesinruralandurbanareasofbuenosairesprovinceargentina
bdutipo_str Repositorios
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