Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Compositional and solid-state nuclear magnetic resonance study of humic and fulvic acid fractions of soil organic matter

Journal Article · · Anal. Chem.; (United States)
DOI:https://doi.org/10.1021/ac00131a004· OSTI ID:7151310
; ; ;
Four soil organic matter samples (two humic acid fractions and two fulvic acid fractions) were obtained from two proximate soils in the flood plain of the Altamaha River in south-eastern Georgia. Each samples was characterized by elemental and functional group analyses and by /sup 13/C nuclear magnetic resonance spectrometry using cross polarization magic angle spinning (CP-MAS) with spin counting. The elemental and functional group analyses provided input for a series of analytical constraints calculations that yield an absolute upper limit for the amount of aromatic carbon and most probable estimates of both aromatic and non-carboxyl aliphatic carbon in each sample. Spin counting experiments demonstrate that less than 50% of the carbon in three of the fractions is observed in the NMR experiment, and even after correction for differential relaxation, the amounts of aromatic and non-carboxyl aliphatic carbon determined by /sup 13/C CP-MAS NMR are dissimilar to those obtained by calculation. Unambiguous evidence is presented for the predominance of aliphatic carboxyl groups in one of the fulvic acid fractions.
Research Organization:
CSIRO, North Ryde, Australia
OSTI ID:
7151310
Journal Information:
Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 59:4; ISSN ANCHA
Country of Publication:
United States
Language:
English

Similar Records

Soil organic matter factions of no-tilled and tilled soils and their reactivity with herbicides
Thesis/Dissertation · Wed Dec 31 23:00:00 EST 1986 · OSTI ID:6157376
[sup 13]C-NMR spectra and contact time experiment for Skjervatjern fulvic and humic acids
Journal Article · Tue Dec 31 23:00:00 EST 1991 · Environment International; (United States) · OSTI ID:7064448
Alicyclic carboxylic acids in soil humic acid as detected with ultrahigh resolution mass spectrometry and multi-dimensional NMR
Journal Article · Wed Jul 19 20:00:00 EDT 2017 · Organic Geochemistry · OSTI ID:1538699

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AROMATICS
CARBON
CARBON 13
CARBON ISOTOPES
CHEMICAL ANALYSIS
CHEMISTRY
DATA
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FULVIC ACIDS
HUMIC ACIDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
NMR SPECTRA
NONMETALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RESONANCE
SOIL CHEMISTRY
SOILS
SOLIDS
SPECTRA
STABLE ISOTOPES