FERNANDEZ SEVERINI Melisa Daiana
TOXIC METALS IN A HIGHLY URBANIZED INDUSTRY-IMPACTED ESTUARY (BAHIA BLANCA ESTUARY, ARGENTINA): SPATIO-TEMPORAL ANALYSIS BASED ON GIS.
FERNÁNDEZ SEVERINI MELISA DAIANA; CARBONE ELIZABETH; VILLAGRAN DIANA MARIEL; JORGE EDUARDO MARCOVECCHIO
Environmental Earth Sciences
Año: 2018 vol. 77 p. 393 - 393
Cadmium, Chromium, Nickel and Lead were evaluated in the particulate fraction at one of the most industrialized estuaries at the Southwestern Atlantic Ocean, through Geographic Information System (GIS). Concentrations were analyzed at 21 stations during 2008-2010. The highest metals concentrations (Cd: 8,9; Cr: 256,49; Ni: 27,02; Pb: 78,43 µg g-1 d. w.) were recorded at the stations located near industrial and urban discharges situated along the estuary. Also, Pb presented a different seasonal and spatial behavior in comparison with Cd, Cr and Ni. Winter and spring presented the higher concentrations of Pb, and the inner stations presented the higher values. The estuary is considered a moderate to strongly polluted and significantly polluted according to the Index of geoaccumulation (Igeo) and the Enrichment Factor (EF) of Cd respectively. The Multi-Dimensional Scaling plot showed three groups of stations: the inner, associated to low levels of metals (G1), middle stations (G2) with intermediate levels and the outer (G3) with the highest ones. Also, this work reveals the usefulness of the GIS mapping techniques in the distribution of pollutants along an estuarine environment and the environmental quality assessment of estuarine systems.