Geogenic Factors Affecting The Selenium (IV) Distribution In Sediments
From Madeira River Basin, Brazil
Author(s)
A. da Costa Neto, D.M. Bonotto & F.L.A. Mesquita
Abstract
Geogenic factors affecting the selenium(1V)
distribution in sediments from Madeira River
basin, Brazil
Abstract
This investigation was carried out at the Madeira River basin, located in the state
of Rondbnia, Brazilian Ama~on. Sediments from Madcira River between
Teotbnio and Santo Antbnio waterfalls along 25 km upstream from Porto Velho:
the capital of Rondbnia state, and from nine lakes located around Porto Velho
municipality were cliemically analyzed for Se (IV) in order to evaluate the main
factors affecting the Se(1V) distribution in the environment. Selenitc ion was
chosen to investigate the selenium behavior in the area. because acid conditions
are dominant there. The importance of clays, iron oxides. organic matter and
minor refractory minerals was cvnsidered in order to esplain most of the
obtained data.
1 Introduction
Seleniuni was discovered in 18 17 by Berrelius and Gahn who used coppcr
pyrites as a source of SOz for [he HISOJ nianut'acture and generated a residue
containing a new
Keywords
Related Book
Other papers in this volume
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