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Full-Text Articles in Physical Sciences and Mathematics
Factors Controlling The Geochemical Partitioning Of Trace Metals In Estuarine Sediments, Edward Burton, Ian Phillips, Darryl Hawker
Factors Controlling The Geochemical Partitioning Of Trace Metals In Estuarine Sediments, Edward Burton, Ian Phillips, Darryl Hawker
Associate Professor Edward D Burton
The geochemical partitioning of trace metals in sediments is of great importance in risk assessment and remedial investigation. Selected factors that may control the partitioning behavior of Cu, Pb and Zn in non-sulfidic, estuarine sediments were examined with the use of combined sorption curve—sequential extraction analysis. This approach, which has not been previously used to examine estuarine sediments, allowed determination of sorption parameters for Cu, Pb and Zn partitioning to individual geochemical fractions. Partitioning behavior in sulfidic sediments was also determined by sequentially extracting Cu, Pb, and Zn from synthetic sulfide minerals and from natural sediment and pure quartz sand …
Estimating Sludge Loadings To Land Based On Trace Metal Sorption In Soil: Effect Of Dissolved Organo-Metallic Complexes, Edward Burton, Darryl Hawker, M Redding
Estimating Sludge Loadings To Land Based On Trace Metal Sorption In Soil: Effect Of Dissolved Organo-Metallic Complexes, Edward Burton, Darryl Hawker, M Redding
Associate Professor Edward D Burton
This paper describes the results of research examining the effect of dissolved organo-metallic complexes of copper (Cu) and zinc (Zn) from sewage sludge leachate on sorption by a humic-gley soil A-horizon, and the influence of such complexes on resultant sludge loading estimates. Sorption was described with Linear, Freundlich or Langmuir equations, and compared between a sample of sludge leachate (containing 97.4% of Cu and 63.2% of Zn as dissolved organo-metallic complexes) and a reference solution (which mimicked the leachate, except for a lack of dissolved organic material). This comparison revealed that dissolved organo-metallic complexes significantly depressed Cu and Zn sorption …