Fractionation of Trace Metals between Catchment Soils and Associated Wetland Sediments of Selected Wetlands of Lake Victoria, East Africa

Authors

  • Leonia Henry Dar es Salaam Institute of Technology
  • Elijah Omutange Moi University

DOI:

https://doi.org/10.3126/jowe.v3i0.2222

Keywords:

Trace metals, fractionation, CEC, leaching capacity, soil properties

Abstract

The aim of this work was to study the trace metals transfer between soil aquifers and the immediate sediments of the selected wetlands of Lake Victoria. The study covered five trace metals Pb, Cd, Cu, Zn and Mn as these are associated with vehicular traffic and with the combustion of fossil fuels which could both be significant sources of pollution within the wetlands of Lake Victoria basin. Three types of trace metal analyses from various locations of Katonga, Simiyu and Nyando catchments of Lake Victoria were performed: total concentrations, the concentrations in the non-residual fraction and the concentration in the exchangeable fraction. The soil characteristics: texture, pH and organic matter contents, were studied in relation to Cation Exchange Capacity (CEC) to assess the rate of movement of the metals between the soil and the wetland sediments. Eventually, the potential retention and leaching capacity of trace metals within the catchment soils and its possible impact on the composition of the receiving sediments of the wetlands were studied. The comparison between Nyando and Simiyu wetlands showed high variations in the soil characteristics and hence in leaching capacity of the studied metals. In general most areas in Nyando wetland required some measures to improve the CEC of the soil for higher agricultural productivity.

Key Words: Trace metals; fractionation; CEC; leaching capacity; soil properties

DOI: 10.3126/jowe.v3i0.2222

Journal of Wetlands Ecology, (2009) Vol. 3, pp 68-76

Downloads

Download data is not yet available.
Abstract
969
PDF
535

Author Biographies

Leonia Henry, Dar es Salaam Institute of Technology

Department of Laboratory Technology

Elijah Omutange, Moi University

  Department of Technical Education

Downloads

Published

2010-02-11

How to Cite

Henry, L., & Omutange, E. (2010). Fractionation of Trace Metals between Catchment Soils and Associated Wetland Sediments of Selected Wetlands of Lake Victoria, East Africa. Journal of Wetlands Ecology, 3, 69–78. https://doi.org/10.3126/jowe.v3i0.2222

Issue

Vol. 3 (2009)

Section

Research Articles

License

https://creativecommons.org/licenses/by-nc-sa/4.0/

The Journal of Wetlands Ecology grants each author the right to republish the article in any book for which he or she is the author or editor, without paying royalties to the Journal of Wetlands Ecology, subject to the express conditions that (a) the author notify the Journal of Wetlands Ecology in advance in writing of this republication and (b) a credit line attributes the original publication to the Journal of Wetlands Ecology.

The author hereby transfers, assigns, or conveys all copyright ownership to the Journal of Wetlands Ecology. By this transfer, the article becomes the property of the Journal of Wetlands Ecology and may not be published elsewhere without written permission from the Journal of Wetlands Ecology. This transfer of copyright also implies transfer of rights for printed, electronic, microfilm, and facsimile publication. No royalty or other monetary compensation will be received for transferring the copyright of the article to the Journal of Wetlands Ecology.