1994
DOI: 10.1007/bf00007919
|View full text |Cite
|
Sign up to set email alerts
|

Characterization of organic matter in a forest soil of coastal British Columbia by NMR and pyrolysis-field ionization mass spectrometry

Abstract: Organic matter in the soil profile under a young Douglas-fir stand in coastal British Columbia was characterized by examining intact samples of fresh litterfall and organic horizons (LF, H), and fractions (floatables, humic acid [HA], fulvic acid [FA], humin [HU]) from the three mineral horizons (Ae, Bin, BC). Some 30-40% of the carbon in the mineral horizons was found in poorly-decomposed plant material floatable in water, a fraction whose characteristics changed little with depth, and which contained over 1%… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

2
44
0
9

Year Published

1995
1995
2012
2012

Publication Types

Select...
6
2

Relationship

0
8

Authors

Journals

citations
Cited by 87 publications
(55 citation statements)
references
References 40 publications
2
44
0
9
Order By: Relevance
“…Essa absorção tam-Os espectros de RMN 13 C possuem, de modo geral, a mesma feição em todas as amostras de AH, porém com intensidades e áreas dos sinais diferentes em cada amostra (Figura 2). As possíveis atribuições dos sinais foram baseadas no conhecimento acumulado pela espectroscopia de RMN 13 C em solos e ácidos húmicos nos trabalhos de Wilson (1984de Wilson ( , 1987, Schnitzer & Preston (1986), Preston et al (1994aPreston et al ( , 1994b, Preston (1996), Köbel-Knaber (1997), Schulten & Schnitzer (1997), Veeman (1997, Zech et al (1997) …”
Section: Resultsunclassified
See 1 more Smart Citation
“…Essa absorção tam-Os espectros de RMN 13 C possuem, de modo geral, a mesma feição em todas as amostras de AH, porém com intensidades e áreas dos sinais diferentes em cada amostra (Figura 2). As possíveis atribuições dos sinais foram baseadas no conhecimento acumulado pela espectroscopia de RMN 13 C em solos e ácidos húmicos nos trabalhos de Wilson (1984de Wilson ( , 1987, Schnitzer & Preston (1986), Preston et al (1994aPreston et al ( , 1994b, Preston (1996), Köbel-Knaber (1997), Schulten & Schnitzer (1997), Veeman (1997, Zech et al (1997) …”
Section: Resultsunclassified
“…(1) As possíveis atribuições foram realizadas de acordo com os trabalhos de Wilson (1984de Wilson ( , 1987, Schnitzer & Preston (1986), Preston et. al.…”
Section: (Tabela 4)unclassified
“…The analysis of FABMS and GC/MS spectra was done using the library-search program of the mass-spectral service at King's College, University of London. The data from "Eight peak index of mass spectra"-MSDS, was compared with mass spectral data from the literature [8,9,10,11] and with structural information obtained from the NMR spectroscopy investigations from The Institute of Organic Chemistry, Bulgarian Academy of Sciences.…”
Section: Mass Spectrometrymentioning
confidence: 99%
“…Pyrolysis-mass spectrometry, a method pioneered by Schulten [8], was developed and widely applied [9,10,11,12] for soil characterisation. This method pyrolyses samples directly under a vacuum in the ion source of the mass spectrometer at temperatures ranging from 50 o C to 750 o C. Thermal decomposition products are then identi¯ed by soft ionisation mass spectrometry [11].…”
Section: Introductionmentioning
confidence: 99%
“…The study of the molecular structure of humic substances has been one the most difficult aspects in the characterization of soil organic matter, due to their complex and irregular structure (Hayes et al, 1996). Spectroscopic methods are the best for assessing changes in the quality of soil organic matter (Beudert et al, 1989;Hempfling & Shulten, 1990;Zech et al, 1992;Preston et al, 1994;Ceretta et al, 1999). 13 C-NMR spectroscopy has provided useful information on C-distribution of organic matter due to different soil managements (Preston, 1996;Bayer et al, 2000).…”
Section: Introductionmentioning
confidence: 99%