Environmental Chemistry Volume 8 Issue 5

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Journal Article

Introduction to a special issue on trace metal speciation – GEOSPEC 2010

Lead Jamie

2011 Environmental Chemistry

doi:10.1071/ENv8n5_FO

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Journal Article

How well can we predict and measure metal speciation in freshwaters?

Hamilton-Taylor John; Ahmed Imad A. M.; Davison William; Zhang Hao

2011 Environmental Chemistry

doi:10.1071/EN11031

Environmental context The ‘speciation’ of metals is concerned with their different chemical and physical forms, a detailed knowledge of which is essential to understand what happens to metals in lakes and rivers, and their effects on living organisms. There have been many advances in recent years...

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Journal Article

Strategies in the application of the Donnan membrane technique

Weng Liping; Alonso Vega Flora; Van Riemsdijk Willem H.

2011 Environmental Chemistry

doi:10.1071/EN11021

Environmental context Free ion concentrations determine the effects of nutrients and pollutants on organisms in the environment. The Donnan membrane technique provides a measure of free ion concentrations. This paper presents clear guidelines on the application of the Donnan membrane technique...

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Journal Article

Determination of manganese and zinc in coastal waters by anodic stripping voltammetry with a vibrating gold microwire electrode

Gibbon-Walsh Kristoff; Salaün Pascal; van den Berg Constant M. G.

2011 Environmental Chemistry

doi:10.1071/EN11023

Environmental context Metals in the marine environment play a role in biological processes but can also be toxic. An electrochemical method with a simple microwire electrode is presented that facilitates detection of zinc and manganese in coastal waters. The method is very sensitive and will...

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Journal Article

Modelling lead(II) sorption to ferrihydrite and soil organic matter

Gustafsson Jon Petter; Tiberg Charlotta; Edkymish Abubaker; Kleja Dan Berggren

2011 Environmental Chemistry

doi:10.1071/EN11025

Environmental context Lead(II) is a toxic metal pollutant with many anthropogenic sources. We show that lead(II) is bound more strongly to soil surfaces than previously understood. This knowledge may lead to better models for lead(II) dissolution from the soils, which will improve risk...

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Journal Article

Fractionation of lead in soil by isotopic dilution and sequential extraction

Atkinson N. R.; Bailey E. H.; Tye A. M.; Breward N.; Young S. D.

2011 Environmental Chemistry

doi:10.1071/EN11020

Environmental context The chemical reactivity of lead in soil is difficult to assess and depends on both soil conditions and the origins of the lead. This paper tests the combined application of lead isotopic techniques and chemical extraction against our understanding of lead fractionation in...

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Journal Article

Assessing WHAM/Model VII against field measurements of free metal ion concentrations: model performance and the role of uncertainty in parameters and inputs

Lofts Stephen; Tipping Edward

2011 Environmental Chemistry

doi:10.1071/EN11049

Environmental context The chemical speciation of metals in waters is of great importance in determining their transport, fate and effects in the environment. Modelling chemical speciation is valuable for making predictions about these effects. Here a model of metal speciation is tested against...

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Journal Article

Using diffusive gradients in thin films to probe the kinetics of metal interaction with algal exudates

Levy Jacqueline; Zhang Hao; Davison William; Groben Rene

2011 Environmental Chemistry

doi:10.1071/EN11046

Environmental context Interaction of metals with dissolved organic matter is one of the key processes defining metal bioavailability in water. The technique of diffusive gradients in thin films was used to investigate the kinetics of the interaction between metals and dissolved organic matter...

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Journal Article

Steady-state DGT fluxes of nanoparticulate metal complexes A

van Leeuwen Herman P.

2011 Environmental Chemistry

doi:10.1071/EN11022

Environmental context Diffusive gel layer techniques can measure fluxes of chemical species in aqueous environmental media. Nanoparticulate metal complexes are small enough to penetrate gels, but their diffusive response is much slower than that of the free metal ions. Hence, time-resolved...

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Environmental Chemistry Volume 8 Issue 5

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