IADO   05364
INSTITUTO ARGENTINO DE OCEANOGRAFIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Polycyclic Aromatic Hydrocarbons (PAHs) distribution in water column of the inner zone of the Bahía Blanca estuary, and its relationship with chlorophyll a, organic matter and ammonium.
Autor/es:
ANDRES ARIAS; CARLA SPETTER; HUGO FREIJE,; JORGE MARCOVECCHIO
Lugar:
Bahia Blanca (Argentina)
Reunión:
Workshop; Science and Management of Estuaries and Coasts: A Tale of Two Hemispheres ECSA 44; 2008
Institución organizadora:
Estuarine and Coastal Sciences Association
Resumen:
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;
mso-font-charset:0;
mso-generic-font-family:roman;
mso-font-pitch:variable;
mso-font-signature:-1610611985 1107304683 0 0 159 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-unhide:no;
mso-style-qformat:yes;
mso-style-parent:"";
margin:0cm;
margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:12.0pt;
font-family:"Times New Roman","serif";
mso-fareast-font-family:"Times New Roman";
mso-ansi-language:ES;
mso-fareast-language:ES;}
p.MsoBodyText, li.MsoBodyText, div.MsoBodyText
{mso-style-unhide:no;
mso-style-link:"Texto independiente Car";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
mso-pagination:widow-orphan;
font-size:12.0pt;
font-family:"Arial","sans-serif";
mso-fareast-font-family:"Times New Roman";
mso-ansi-language:EN-GB;
mso-fareast-language:ES;}
span.TextoindependienteCar
{mso-style-name:"Texto independiente Car";
mso-style-unhide:no;
mso-style-locked:yes;
mso-style-link:"Texto independiente";
mso-ansi-font-size:12.0pt;
mso-bidi-font-size:12.0pt;
font-family:"Arial","sans-serif";
mso-ascii-font-family:Arial;
mso-hansi-font-family:Arial;
mso-bidi-font-family:Arial;
mso-ansi-language:EN-GB;
mso-fareast-language:ES;}
.MsoChpDefault
{mso-style-type:export-only;
mso-default-props:yes;
font-size:10.0pt;
mso-ansi-font-size:10.0pt;
mso-bidi-font-size:10.0pt;}
@page Section1
{size:612.0pt 792.0pt;
margin:70.85pt 3.0cm 70.85pt 3.0cm;
mso-header-margin:36.0pt;
mso-footer-margin:36.0pt;
mso-paper-source:0;}
div.Section1
{page:Section1;}
-->
Polycyclic
aromatic hydrocarbons (PAHs) are ubiquitous contaminants in the marine coastal
environments and are counted among the major groups of anthropogenic
environmental pollutants due to their bioaccumulative potential,
carcinogenicity and high persistence. The Bahia Blanca Estuary presents an
intensive human activity at the north shoreline: oil, chemical and plastic
factories, two commercial harbours, a tourist area, a fishing / recreational
port and a big industrial city with more of 350000 inhabitants.
This
work presents the first comprehensive survey of PAHs in estuarine water column
and provides useful information on their levels of concentration and its
relationships with water chemistry. 30 samples of sub-superficial water were
collected and analyzed for 17 PAHs, Chlorophyll a, Phaeopigments,
Particulate Organic Matter (POM) and Ammonium concentration between March and
December of 2005.
Water
PAH´s highest concentrations occurred in early spring a period in which the typical
phytoplankton bloom has just finished. These high levels positively correlated
with dissolved Ammonium and Phaeopigments increasing levels whereas Chlorophyll
a and POM concentrations were shown to negatively correlate. On the
opposite, minimum values and erratic distributions of water PAH´s coexisted
with the period of highest phytoplankton activity.
Results were discussed and different
hypothesis on water PAHs fate and distributions respect to the dynamics of the
analyzed environmental factors were outlined.