Presence, distribution, and origins of polycyclic aromatic hydrocarbons (PAHs) in sediments from Bahía Blanca estuary, Argentina

Authors
Arias, Andres Hugo; Vazquez Botello, Alfonso; Tombesi, Norma Beatriz; Ponce Vélez, Guadalupe; Freije, Rubén Hugo; Marcovecchio, Jorge Eduardo
Publication Year
2010
Language
English
Format
article
Status
Published version
Description
This paper is the first comprehensive survey of polycyclic aromatic hydrocarbons (PAHs) in coastal sediments in Bahia Blanca, Argentina, and provides useful information on their levels of concentration, composition, and sources of these pollutants. The total concentrations of PAHs ranged from 15 to 10,260 ng g-1. The highest contents (mean 3,315 ng g-1) of total PAHs in marine sediments were found in the inner channels of the estuary, while the lower ones (204 ng g-1) belong to samples collected far away from contamination sources. The global average recorded in this study (1,500 ng g-1) indicates that the studied area lies within the referenced category of industrialized coastal zones under chronic pollution. The diagenetic PAH contribution was found to be negligible at all sampled locations; however, the calculation of molecular ratios determined an overimposition of pyrolitic PAHs over the petrogenic input. Further, the use of principal components analysis (PCA) clearly separated ring group compounds and enabled the determination of pyrolitic/combustion PAHs dominancy.
Fil: Arias, Andres Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
Fil: Vazquez Botello, Alfonso. Universidad Nacional Autónoma de México; México
Fil: Tombesi, Norma Beatriz. Universidad Nacional del Sur; Argentina
Fil: Ponce Vélez, Guadalupe. Universidad Nacional Autónoma de México; México
Fil: Freije, Rubén Hugo. Universidad Nacional del Sur; Argentina
Fil: Marcovecchio, Jorge Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad FASTA ; Argentina. Universidad Tecnológica Nacional; Argentina
Subject
BAHÍA BLANCA ESTUARY
MOLECULAR RATIOS
PAHS
PCA
SEDIMENTS
Meteorología y Ciencias Atmosféricas
Ciencias de la Tierra y relacionadas con el Medio Ambiente
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/60007