Behavior of Dioxin Like PCBs and PBDEs During Early Diagenesis of Organic Matter in Settling Material and Bottom Sediments from the Sewage Impacted Buenos Aires’ Coastal Area, Argentina

Settling particles (SPs) and sediments collected in the Buenos Aires sewer area were analyzed for dioxin like polychlorinated biphenyls (dlPCBs) and polybrominated diphenyl ethers (PBDEs) to follow early diagenetic changes during transport and deposition of organic matter. SP showed a temporal trend...

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Autores principales: Cappelletti, Natalia Elsa, Skorupka, Carlos Norberto, Migoya, María Carolina, Tatone, Leandro Martín, Astoviza, Malena Julia, Colombo, Juan Carlos
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Naturales
Dioxin like PCB
PBDE
Rio de la Plata
Vertical fluxes
Diagenetic
Sewage
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130526
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130526
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
Dioxin like PCB
PBDE
Rio de la Plata
Vertical fluxes
Diagenetic
Sewage
spellingShingle Ciencias Naturales
Dioxin like PCB
PBDE
Rio de la Plata
Vertical fluxes
Diagenetic
Sewage
Cappelletti, Natalia Elsa
Skorupka, Carlos Norberto
Migoya, María Carolina
Tatone, Leandro Martín
Astoviza, Malena Julia
Colombo, Juan Carlos
Behavior of Dioxin Like PCBs and PBDEs During Early Diagenesis of Organic Matter in Settling Material and Bottom Sediments from the Sewage Impacted Buenos Aires’ Coastal Area, Argentina
topic_facet Ciencias Naturales
Dioxin like PCB
PBDE
Rio de la Plata
Vertical fluxes
Diagenetic
Sewage
description Settling particles (SPs) and sediments collected in the Buenos Aires sewer area were analyzed for dioxin like polychlorinated biphenyls (dlPCBs) and polybrominated diphenyl ethers (PBDEs) to follow early diagenetic changes during transport and deposition of organic matter. SP showed a temporal trend of higher total organic carbon (TOC) and fresher dlPCBs and PBDEs signatures during warm-rainy months related to more efficient washout of residues. TOC-normalized sediment trap concentrations suggest a diagenetic magnification of dlPCBs during cold-dry months due to enhanced decomposition of TOC, whereas most labile PBDEs appear to follow TOC decay. The diagenetic behavior of individual congeners along seasonal changes (cold/warm) and during deposition (bottom sediment/SP) shows the selective preservation of heavier, more persistent congeners with a positive relationship with sediment half-lives. The 3–4 times diagenetic magnification of heavier congeners observed in bottom sediments would be a prevailing long-term pathway for dlPCBs and PBDEs bioaccumulation in detritus feeding organisms.
format Articulo
Articulo
author Cappelletti, Natalia Elsa
Skorupka, Carlos Norberto
Migoya, María Carolina
Tatone, Leandro Martín
Astoviza, Malena Julia
Colombo, Juan Carlos
author_facet Cappelletti, Natalia Elsa
Skorupka, Carlos Norberto
Migoya, María Carolina
Tatone, Leandro Martín
Astoviza, Malena Julia
Colombo, Juan Carlos
author_sort Cappelletti, Natalia Elsa
title Behavior of Dioxin Like PCBs and PBDEs During Early Diagenesis of Organic Matter in Settling Material and Bottom Sediments from the Sewage Impacted Buenos Aires’ Coastal Area, Argentina
title_short Behavior of Dioxin Like PCBs and PBDEs During Early Diagenesis of Organic Matter in Settling Material and Bottom Sediments from the Sewage Impacted Buenos Aires’ Coastal Area, Argentina
title_full Behavior of Dioxin Like PCBs and PBDEs During Early Diagenesis of Organic Matter in Settling Material and Bottom Sediments from the Sewage Impacted Buenos Aires’ Coastal Area, Argentina
title_fullStr Behavior of Dioxin Like PCBs and PBDEs During Early Diagenesis of Organic Matter in Settling Material and Bottom Sediments from the Sewage Impacted Buenos Aires’ Coastal Area, Argentina
title_full_unstemmed Behavior of Dioxin Like PCBs and PBDEs During Early Diagenesis of Organic Matter in Settling Material and Bottom Sediments from the Sewage Impacted Buenos Aires’ Coastal Area, Argentina
title_sort behavior of dioxin like pcbs and pbdes during early diagenesis of organic matter in settling material and bottom sediments from the sewage impacted buenos aires’ coastal area, argentina
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/130526
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