Multi-wavelength molecular fluorescence spectrometry for quantitative characterization of copper(II) and aluminum(III) complexation by dissolved organic matter

Article Abstract:

Multi-wavelength molecular fluorescence spectrometry (MFS) shows promise as a method for the characterization of the metal complexation behavior of copper(II) and aluminum(III) by dissolved organic matter in a juniper leaf litter extract. However, MFS would only be the method of choice if the correct sets of binding parameters are always derived at the same excitation/emission wavelength pair, especially for large categories of similar organic matter.

Analysis, Evaluation, Aluminum, Aluminum (Metal), Copper, Fluorescence spectroscopy

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Mimicked in-situ stabilization of metals in a cropped soil: bioavailability and chemical form of zinc

Article Abstract:

The addition of the ameliorants lime, zeolite, apatite and an iron oxide waste byproduct reduced the concentration of the exchangeable zinc in artificially contaminated soil, enhanced the growth of some plants and significantly lowered zinc uptake by plants. This was the conclusion of experiments involving the addition of these ameliorants to an artificially contaminated Appling silt loam soil to stabilize and limit the uptake of zinc by crops.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Zinc, Zinc products, Soils, Composition, Bioavailability, Plant-soil relationships

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Environmental reductive elimination reactions of polychlorinated ethanes mimicked by transition-metal coenzymes

Article Abstract:

Transition-metal coenzymes can catalyze the reductive biodehalogenation of polychlorinated ethanes. Biodehalogenation can utilize substitution, oxidation, reduction and/or elimination. Chlorinated organic compounds are changed in the environment by both abiotic and biotic processes.

Ethanes, Ethane, Elimination reactions

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