Title page for ETD etd-01182005-091457

Document Type Master's Dissertation
Author Botes, Paul Johannes
URN etd-01182005-091457
Document Title Investigation of mobility of trace elements in river sediments using ICP-OES
Degree MSc (Chemistry)
Department Chemistry
Advisor Name Title
Prof J F van Staden
  • no key words available
Date 2002-12-05
Availability unrestricted
This study focused on the pH dependant mobility of 15 trace elements in river

sediments in South Africa. These river sediments originated from the Blesbokspruit

(near Witbank in the Mpumalanga Province), the Crocodile River (near Hartebeespoort

Dam in the Gauteng Province) and the Olifants River (near Ohrigstad in the Northern

Province). A theoretical discussion on the properties of the measured trace elements

and the ICP-OES technique were included in this study for the sake of completeness.

Three different fractions of river sediment (smaller than 0.2 mm, bigger than 0.2 mm

and unsieved) were investigated using two different leaching techniques and a digestion

procedure to determine the total trace element content. The sediment was subjected to

simulated pollution by trace element through the addition of standard solutions in know

concentrations. These results it were evaluated to determine the possible behaviour of

trace elements that is not presently present in the river sediment. The results obtained

from this study were used to determine the impact that trace elements may have in the

pollution of the underground water resources.

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