منابع مشابه
Aquatic Humic Substances
4 Chemical Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 4.1 Elemental Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307 4.2 Molecular Size Distribution and Charge . . . . . . . . . . . . . . . . . . . . . . 309 4.3 Spectral Absorbance and Fluorescence . . . . . . . . . . . . . . . . . . . . . . . 311 4.4 Infrared Spectra . . . . ....
متن کاملCation binding by humic substances
Humic substances are highly abundant organic compounds formed in soils and sediments by the decay of dead plants, microbes and animals. This book focuses on the important binding properties of these compounds that regulate the chemical reactivity and bioavailability of hydrogen andmetal ions in the natural environment. Topics covered include the physico-chemical properties of humic matter and i...
متن کاملHUMIC SUBSTANCES Capillary Zone Electrophoresis
Humic substances (HS) which are widespread in the soil, present structural complexity and polyelectrolyte properties. Many techniques and methods have been used to obtain more information about them, as reviewed by Davies and Ghabbour in 1999. The characterization of HS has been the focus of intense research for many years because the organic matter in soil contributes to the quality of the soi...
متن کاملHealth Value of Humic Substances
It has been found that humic acid in dose levels of 100-300 milligrams per kilogram body weight has no effect on bleeding time, clotting time, thrombin time, plate count, or induced platelet aggregation (49). Red blood cells and hemoglobin stay on normal levels under the influence of humate in comparison with control groups (15). Literature has indicated that the red blood cells have the capabi...
متن کاملBinding of mercury(II) to aquatic humic substances: influence of pH and source of humic substances.
Conditional distribution coefficients (K(DOM')) for Hg(II) binding to seven dissolved organic matter (DOM) isolates were measured at environmentally relevant ratios of Hg(II) to DOM. The results show that K(DOM') values for different types of samples (humic acids, fulvic acids, hydrophobic acids) isolated from diverse aquatic environments were all within 1 order of magnitude (10(22.5 +/-1.0)-10...
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ژورنال
عنوان ژورنال: Environmental Science and Pollution Research
سال: 2007
ISSN: 0944-1344,1614-7499
DOI: 10.1065/espr2007.07.434