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Information Provided on Humic Substances by E4/E6 Ratios1
The ratio of optical densities or absorbances of dilute, aqueous humic and fulvic acid solutions at 465 and 665 nm (E4/E6) is widely used by soil scientists for the characterization of theseExpand
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Factors controlling humification and mineralization of soil organic matter in the tropics
Abstract The first part of this review focuses on the chemical composition and morphological features that characterize primary and secondary organic resources for humification. The chemical pathwaysExpand
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Molecular and quantitative aspects of the chemistry of fulvic acid and its interactions with metal ions and organic chemicals : Part II. The fluorescence spectroscopy approach
Abstract Information in the literature on the use of fluorescence spectroscopy for the study of the chemistry of fulvic acid and its interactions with metal ions and organic chemicals is discussed.Expand
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Trace element inputs into soils by anthropogenic activities and implications for human health.
Trace element definition and functions, and inputs into soils from the most important anthropogenic sources, related and not related to agricultural practices, of general and local or incidentalExpand
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CHARACTERIZATION, DIFFERENTIATION, AND CLASSIFICATION OF HUMIC SUBSTANCES BY FLUORESCENCE SPECTROSCOPY
Fifty samples of humic acids and fulvic acids isolated from various soils and soil-related materials (including paleosols, peat, leonardite, composted and earth-worm-composted organic materials,Expand
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Dissolved Organic Matter
Abstract Dissolved organic matter (DOM) is defined as the organic matter fraction in solution that passes through a 0.45 μm filter. Although DOM is ubiquitous in terrestrial and aquatic ecosystems,Expand
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Binding mechanisms of pesticides to soil humic substances.
  • N. Senesi
  • Chemistry, Medicine
  • The Science of the total environment
  • 12 August 1992
This review-paper summarizes and discusses the nature of the binding forces involved and the types of mechanisms operating, often simultaneously, in the adsorption processes of several pesticidesExpand
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Biophysico-Chemical Processes Involving Natural Nonliving Organic Matter in Environmental Systems
Series Preface. Preface. About the Editors. List of Contributors. 1 Evolution of Concepts of Environmental Natural Nonliving Organic Matter ( M. H. B. Hayes ). 2 Formation Mechanisms of HumicExpand
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  • PDF
Composted materials as organic fertilizers
Abstract The subject-matter of this review paper is divided into three sections. The first section briefly discusses on input, transformation and loss of native and added organic matter in soil andExpand
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Molecular and quantitative analysis of metal ion binding to humic acids from sewage sludge and sludge-amended soils by fluorescence spectroscopy.
Humic acids (HAs) isolated from sewage sludge (SS) and control and SS-amended soils were characterized by fluorescence spectroscopy. The main feature of fluorescence spectra was a broad band with theExpand
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