Isolation and Characterization of Soil Fulvic Acid
نویسندگان
چکیده
منابع مشابه
Isolation and Characterization of Chinese Standard Fulvic Acid Sub-fractions Separated from Forest Soil by Stepwise Elution with Pyrophosphate Buffer
XAD-8 adsorption technique coupled with stepwise elution using pyrophosphate buffers with initial pH values of 3, 5, 7, 9, and 13 was developed to isolate Chinese standard fulvic acid (FA) and then separated the FA into five sub-fractions: FApH3, FApH5, FApH7, FApH9 and FApH13, respectively. Mass percentages of FApH3-FApH13 decreased from 42% to 2.5%, and the recovery ratios ranged from 99.0% t...
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Cryogenic Curie-point pyrolysis-gas chromatography-mass spectrometry has been applied to investigate the chemical composition of organic matter present in soils. Two soil fulvic acid fractions, a so-called soil polysaccharide fraction and polymaleic acid were analyzed. The soil polysaccharide fraction contains almost exclusively polysaccharides with major building blocks glucose, mannose and ga...
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متن کاملStructural Characterization of a Fulvic Acid and a Humic Acid Using Solid-State Ramp-CP-MAS
This study uses the analysis of 13C nuclear magnetic resonance (NMR) spectra and NMR relaxation parameters to study the structure and functional group distribution of a fulvic acid and a humic acid. The spectra and relaxation parameters are obtained with a new cross polarization magic angle spinning (CP-MAS) 13C NMR technique that gives qualitatively and quantitatively accurate results at highe...
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ژورنال
عنوان ژورنال: Pakistan Journal of Analytical & Environmental Chemistry
سال: 2016
ISSN: 1996-918X
DOI: 10.21743/pjaec/2016.06.002