CIDCA 05380
CENTRO DE INVESTIGACION Y DESARROLLO EN CRIOTECNOLOGIA DE ALIMENTOS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Watch H2Out! Cyanobacteria and Cyanotoxins in the drinking water of Concordia city, Entre Rios, Argentina
Autor/es:
A. NIEZ GAY; D. SEDAN; R. ECHENIQUE; C. OLIVER; L. GIANNUZZI; D. ANDRINOLO
Lugar:
Estambul
Reunión:
Congreso; The 8th International Conference on Toxic Cyanobacteria (ICTC8); 2010
Resumen:
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Background and aims.
In order to attend to
the impact of the regional cyanobacterial blooms, the aims of this research
were: to study the presence of potentially toxic cyanobacteria in the reservoir
of Salto Grande Lake, in the Uruguay River, province of Entre Rios, Argentina,
(downstream from the reservoir) and on the drinking water network of Concordia
urban area.
Methods
Six sampling sites were
chosen and the samples were collected between August 2008 and June 2009. 38 samples
were taken from the lake and river and 76 from drinking water network of
Concordia.
The phytoplankton
analysis was made using an optic microscope and Utermöhl method.The detection
of microcystins samples was performed using a HPLC-DAD system.
3.- Results and
conclusion
Total phytoplankton
cells from Salto Grande Reservoir fluctuated between 4.8 x 107
cel.ml-1 and 3.2 x 104 cel.ml-1; and 104
cel.ml-1 and 6.4 x103 cel.ml-1 on the Uruguay River.
Microcystis sp. and Anabaena sp. were detected in raw and drinking water.
HPLC analysis revealed
that from the 69 samples analyzed, 55.07 % had microcystins. From the drinking
water samples, 68.18 % had a microcystin concentration higher than 1 mg/l.
The presence of high
density of Anabaena sp, Rhaphidiopsis mediterranea and Oscillatoria sp cells in
the samples of raw and tap water showed that other cyanotoxins could be present.
