INVESTIGADORES
POLIZZI Paula Sabrina
artículos
Título:
Geochemical mobility of arsenic in the surficial waters from Argentina
Autor/es:
ROBLES, ALICIA; POLIZZI, PAULA; ROMERO, MA. BELEN; CHIODI BOUDET, LEILA; MEDICI, S.; COSTAS, AGUSTIN; GERPE, MARCELA
Revista:
Environmental Earth Science
Editorial:
springer
Referencias:
Año: 2016
ISSN:
1866-6280
Resumen:
The presence of arsenic (As) in surface waterconstitutes an important environmental risk, where mobilityand adsorption processes are responsible for its behaviorin the sediment?water interface. Therefore, the assessmentof adsorption, mobility and water availability of arsenic infreshwater sediments, with agricultural, livestock andurban soil uses was performed. Arsenic concentrations insediments ranged from 5.4 to 15.9 mg kg-1 (total) and 2.8to 6.5 mg kg-1 (labile), and those of iron and manganesewere 11,563?23,500 and 140.6?662.1 mg kg-1, respectively.The As levels in water were significantly lower thanthose of sediments. Results would suggest that As co-precipitationand adsorption on Fe oxides are probably themajor route of immobilization, determining its low lability.Manganese did not present an outstanding contribution tothe retention, and cation-exchange capacity, pH andorganic matter of sediments did not show an influence onthe mobility of As.
