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Major and trace elements in sediments of the upper course of Lerma river

  • S. Tejeda
  • G. Zarazúa-Ortega
  • P. Avila-Pérez
  • A. García-Mejía
  • L. Carapia-Morales
  • C. Diaz-Delgado
Article

Summary

The Lerma is one of the most important rivers of Mexico, where it drains highly populated and industrialized regions. The concentration of six major and trace elements: titanium, manganese, iron, zinc, copper and lead in the surface sediments of the upper course of Lerma river was investigated, in order to identify its distribution along the river and to recognize the principal sites of pollution. The surface sediment samples were collected at 8 sites distributed following the stream flow direction of the river. Major and trace elements concentrations were determined by energy dispersive X-ray spectrometry. The results show that the metal concentrations in the sediments decrease in the sequence: Fe > Ti > Mn > Zn > Cu > Pb. Concentration of Fe, Mn and Ti were significantly higher than the other metals in site 8,200 meters downstream the Alzate Dam. The high concentrations and spatial variations of Zn, Cu and Pb in the middle sites of the upper course of the Lerma River indicate that the river pollution is probably associated with urban and industrial discharges.

Keywords

International Atomic Energy Agency Water Hyacinth Total Organic Carbon Content Domestic Sewage Bulk Sediment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag/Akadémiai Kiadó 2006

Authors and Affiliations

  • S. Tejeda
    • 1
  • G. Zarazúa-Ortega
    • 2
  • P. Avila-Pérez
    • 3
  • A. García-Mejía
    • 4
  • L. Carapia-Morales
    • 5
  • C. Diaz-Delgado
    • 6
  1. 1.Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Ambientales
  2. 2.Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Ambientales
  3. 3.Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Ambientales
  4. 4.Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Ambientales
  5. 5.Instituto Nacional de Investigaciones Nucleares, Gerencia de Ciencias Ambientales
  6. 6.Centro Interamericano de Recursos del Agua, UAEM

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