INVESTIGADORES
MIGLIORANZA Karina Silvia Beatriz
artículos
Título:
Organochlorine pesticides sequestered in the aquatic macrophyte Schoenoplectus californicus from a shallow lake in Argentina
Autor/es:
MIGLIORANZA KARINA SILVIA BEATRIZ; AIZPUN JULIA ELENA; MORENO VICTOR JORGE
Revista:
WATER RESEARCH
Editorial:
Elsevier
Referencias:
Año: 2004 vol. 38 p. 1765 - 1772
ISSN:
0043-1354
Resumen:
This study was conducted in Los Padres Lake fromArgentina in order to assess the ability of Schoenoplectus
californicus to bioconcentrate organochlorine pesticides (OCPs). Bulrush tissues, superficial and near root sediments
were collected fromthe input and the output creek areas. OCP analyses were carried out by GC-ECD. Samples from
the input creek area showed the higher OCP levels as a result of contaminants washed down from upstream agricultural
fields. Bulrush roots accumulated the highest concentrations of pollutants (30.245.7 ng g1 dry weight). DDTs and
chlordanes predominated in sediments and roots besides endosulfan sulfate. The sediments constitute the main source
for these OCPs partitioning to bulrush. Stems mainly exposed to water column accumulated preferentially the less
hydrophobic pesticides, such as HCHs and endosulfans. We have confirmed the important role of S. californicus in the
contaminant removal from sediments. Therefore, this macrophyte can be used as a tool for field studies of OCP
pollution monitoring and remediation.Schoenoplectus
californicus to bioconcentrate organochlorine pesticides (OCPs). Bulrush tissues, superficial and near root sediments
were collected fromthe input and the output creek areas. OCP analyses were carried out by GC-ECD. Samples from
the input creek area showed the higher OCP levels as a result of contaminants washed down from upstream agricultural
fields. Bulrush roots accumulated the highest concentrations of pollutants (30.245.7 ng g1 dry weight). DDTs and
chlordanes predominated in sediments and roots besides endosulfan sulfate. The sediments constitute the main source
for these OCPs partitioning to bulrush. Stems mainly exposed to water column accumulated preferentially the less
hydrophobic pesticides, such as HCHs and endosulfans. We have confirmed the important role of S. californicus in the
contaminant removal from sediments. Therefore, this macrophyte can be used as a tool for field studies of OCP
pollution monitoring and remediation.to bioconcentrate organochlorine pesticides (OCPs). Bulrush tissues, superficial and near root sediments
were collected fromthe input and the output creek areas. OCP analyses were carried out by GC-ECD. Samples from
the input creek area showed the higher OCP levels as a result of contaminants washed down from upstream agricultural
fields. Bulrush roots accumulated the highest concentrations of pollutants (30.245.7 ng g1 dry weight). DDTs and
chlordanes predominated in sediments and roots besides endosulfan sulfate. The sediments constitute the main source
for these OCPs partitioning to bulrush. Stems mainly exposed to water column accumulated preferentially the less
hydrophobic pesticides, such as HCHs and endosulfans. We have confirmed the important role of S. californicus in the
contaminant removal from sediments. Therefore, this macrophyte can be used as a tool for field studies of OCP
pollution monitoring and remediation.1 dry weight). DDTs and
chlordanes predominated in sediments and roots besides endosulfan sulfate. The sediments constitute the main source
for these OCPs partitioning to bulrush. Stems mainly exposed to water column accumulated preferentially the less
hydrophobic pesticides, such as HCHs and endosulfans. We have confirmed the important role of S. californicus in the
contaminant removal from sediments. Therefore, this macrophyte can be used as a tool for field studies of OCP
pollution monitoring and remediation.S. californicus in the
contaminant removal from sediments. Therefore, this macrophyte can be used as a tool for field studies of OCP
pollution monitoring and remediation.
r 2004 Elsevier Ltd. All rights reserved.2004 Elsevier Ltd. All rights reserved.
Keywords: Organochlorine pesticides; Schoenoplectus californicus;Organochlorine pesticides; Schoenoplectus californicus;