Distribution and bioavailability of arsenic in natural waters of a mining area studied by ultrafiltration and diffusive gradients in thin films.
- Gontijo, Erik Sartori Jeunon
- Watanabe, Cl?udia Hitomi
- Monteiro, Adnivia Santos Costa
- Tonello, Paulo Sergio
- Silva, Gilmare Ant?nia da
- Friese, Kurt
- Roeser, Hubert Mathias Peter
- Rosa, Andr? Henrique
DOIAbstract
The distribution of metals and metalloids among particulate, dissolved, colloidal, free, and labile forms in natural waters is of great environmental concern since it determines their transportation behaviour and bioavailability. Organic matter can have an important role for this distribution process, since it is an important complexing agent and ubiquitous in the aquatic environment. We studied the distribution, mobility and bioavailability of Al, As and Fe in natural waters of a mining area (Quadril atero Ferr?fero, Brazil) and the influence of organic matter in these processes. Water samples were taken from 12 points during the dry and rainy seasons, filtrated at 0.45 mm and ultrafiltrated (<1 kDa) to separate the particulate, col...
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