Geochemical mobility of arsenic in the surficial waters from Argentina
- Robles, Alicia Daniela
- Polizzi, Paula Sabrina
- Romero, María Belén
- Chiodi Boudet, Leila Natalia
- Medici, Sandra Karina
- Costas, Agustín
- Gerpe, Marcela Silvia
DOIAbstract
The presence of arsenic (As) in surface water constitutes an important environmental risk, where mobility and adsorption processes are responsible for its behavior in the sediment–water interface. Therefore, the assessment of adsorption, mobility and water availability of arsenic in freshwater sediments, with agricultural, livestock and urban soil uses was performed. Arsenic concentrations in sediments ranged from 5.4 to 15.9 mg kg−1 (total) and 2.8 to 6.5 mg kg−1 (labile), and those of iron and manganese were 11,563–23,500 and 140.6–662.1 mg kg−1, respectively. The As levels in water were significantly lower than those of sediments. Results would suggest that As co-precipitation and adsorption on Fe oxides are probably the major route of i...
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