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Determination of uranium and thorium in sediments from Cananéia-Iguape system, Brazil

  • Luiz Flávio Lopes TeixeiraEmail author
  • Barbara Paci Mazzilli
Article
  • 6 Downloads

Abstract

The Cananéia-Iguape system is a complex of lagoon and estuarine channels located in the south of state of São Paulo. This system received the waters of Ribeira de Iguape River, after the construction of a channel in 1852, which changed its original characteristic. This study evaluated the uranium and thorium concentrations in superficial bottom sediments samples from this system by spectrophotometric determination. The mean uranium concentration found was 2.9 mg kg−1 and 6.6 mg kg−1 for thorium. Geo-accumulation index classified the sediments as “unpolluted to moderately polluted”. Statistical analysis showed that uranium and thorium presented a non-homogeneous behavior along the system.

Keywords

Uranium Thorium Sediment Cananeia-Iguape Spectrophotometry 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that there is no conflict of interest.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Instituto de Pesquisas Energéticas e Nucleares – IPENSão PauloBrazil

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