Microcystis AND MICROCYSTINS IN RAW AND TAP WATER OF BUENOS AIRES (ARGENTINA)

ANDRINOLO D, CANEO M, YEMA L, RODRIGUEZ J, TORRES D, AZEVEDO S, ECHENIQUE R.

Rio de Janeiro. Brasil

Congreso; VII International Conference on Cyanobacteria; 2007

UFRG

In the past few years there has been an increase in the frequency of intensity of the toxic Cyanobacteria blooms around the world, which has produced deep sanitary, economic and environmental impacts. In the R¨ªo de la Plata basin, the only identified toxins, microcystins, turned out to be synthetised by Microcystis aeruginosa.Microcystis aeruginosa. The chronical poisonings with mild doses of microcystins encourage the tumour formation, evidencing a correlation between primary liver cancer and Cyanobacteria blooms in freshwater environments used as drinking water supply. In the present work it is evaluated the presence of M. aeruginosa and microcystins in the coastal zone of the R¨ªo de la Plata estuary, Ensenada and in different areas of the tap water net in the cities of Ensenada and La Plata (Argentina). For such purpose, research was carried out between December 2006 and March 2007, analyzing physichal, chemical and biological parametres. The microcystins were analyzed via the HPLC-UV method. The studied samples evidenced the constant presence of M. aeruginosa in the R¨ªo de la Plata estuary, frequently generating blooms. Such phenomena have a direct impact on the tap water quality. Several phytoplanctonic taxa, particularly M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. frequently generating blooms. Such phenomena have a direct impact on the tap water quality. Several phytoplanctonic taxa, particularly M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. of the R¨ªo de la Plata estuary, Ensenada and in different areas of the tap water net in the cities of Ensenada and La Plata (Argentina). For such purpose, research was carried out between December 2006 and March 2007, analyzing physichal, chemical and biological parametres. The microcystins were analyzed via the HPLC-UV method. The studied samples evidenced the constant presence of M. aeruginosa in the R¨ªo de la Plata estuary, frequently generating blooms. Such phenomena have a direct impact on the tap water quality. Several phytoplanctonic taxa, particularly M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. frequently generating blooms. Such phenomena have a direct impact on the tap water quality. Several phytoplanctonic taxa, particularly M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. M. aeruginosa and microcystins in the coastal zone of the R¨ªo de la Plata estuary, Ensenada and in different areas of the tap water net in the cities of Ensenada and La Plata (Argentina). For such purpose, research was carried out between December 2006 and March 2007, analyzing physichal, chemical and biological parametres. The microcystins were analyzed via the HPLC-UV method. The studied samples evidenced the constant presence of M. aeruginosa in the R¨ªo de la Plata estuary, frequently generating blooms. Such phenomena have a direct impact on the tap water quality. Several phytoplanctonic taxa, particularly M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. frequently generating blooms. Such phenomena have a direct impact on the tap water quality. Several phytoplanctonic taxa, particularly M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. M. aeruginosa in the R¨ªo de la Plata estuary, frequently generating blooms. Such phenomena have a direct impact on the tap water quality. Several phytoplanctonic taxa, particularly M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. M. aeruginosa, were detected in every considered area of the domiciliary net. As regards microcystins, their values in the tap water in several moments are higher than 1 ¦Ìg-1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation. -1, whereas it was shown a decrease in the drinking water concentration, from the region nearby the plant to the furthest ones. Hence, it is evident that the water treatment conditions in the area are inneficient and do not abide by the current legislation.