Does ultrasonic dispersion and homogenization by ball milling change the chemical structure of organic matter in geochemical samples? - A CPMAS 13C NMR study with lignin

Michael W.I. Schmidt; Heike Knicker; Patrick G. Hatcher; Ingrid Kögel-Knabner

doi:10.1016/S0146-6380(97)00047-8

Does ultrasonic dispersion and homogenization by ball milling change the chemical structure of organic matter in geochemical samples? - A CPMAS ¹³C NMR study with lignin

Michael W.I. Schmidt, Heike Knicker, Patrick G. Hatcher, Ingrid Kögel-Knabner

Chair of Soil Science

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Ultrasonic dispersion of geochemical samples suspended in water and subsequent homogenization by ball milling is widely used for fractionation of organic matter. The effect of these treatments on organic matter is investigated with lignin as a model compound. Structural alterations detectable by solid-state ¹³C nuclear magnetic resonance (NMR) spectroscopy were examined. Comparison of the solid-state ¹³C NMR spectra of untreated lignin and lignin mixed with quartz or so did not reveal evidence for structural changes in the organic matter composition after ultrasonic dispersion and subsequent ball-milling. The chemical structure of organic matter in geochemical samples is not affected by these treatments as far as such structural alterations can be detected by solid-state ¹³C NMR spectroscopy.

Original language	English
Pages (from-to)	491-496
Number of pages	6
Journal	Organic Geochemistry
Volume	26
Issue number	7-8
DOIs	https://doi.org/10.1016/S0146-6380(97)00047-8
State	Published - Apr 1997

Keywords

CPMAS C NMR
Lignin
Organic matter
Sediment
Soil
Ultrasonic dispersion

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10.1016/S0146-6380(97)00047-8

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title = "Does ultrasonic dispersion and homogenization by ball milling change the chemical structure of organic matter in geochemical samples? - A CPMAS 13C NMR study with lignin",

abstract = "Ultrasonic dispersion of geochemical samples suspended in water and subsequent homogenization by ball milling is widely used for fractionation of organic matter. The effect of these treatments on organic matter is investigated with lignin as a model compound. Structural alterations detectable by solid-state 13C nuclear magnetic resonance (NMR) spectroscopy were examined. Comparison of the solid-state 13C NMR spectra of untreated lignin and lignin mixed with quartz or so did not reveal evidence for structural changes in the organic matter composition after ultrasonic dispersion and subsequent ball-milling. The chemical structure of organic matter in geochemical samples is not affected by these treatments as far as such structural alterations can be detected by solid-state 13C NMR spectroscopy.",

keywords = "CPMAS C NMR, Lignin, Organic matter, Sediment, Soil, Ultrasonic dispersion",

author = "Schmidt, {Michael W.I.} and Heike Knicker and Hatcher, {Patrick G.} and Ingrid K{\"o}gel-Knabner",

year = "1997",

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doi = "10.1016/S0146-6380(97)00047-8",

language = "English",

volume = "26",

pages = "491--496",

journal = "Organic Geochemistry",

issn = "0146-6380",

publisher = "Elsevier Ltd.",

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Does ultrasonic dispersion and homogenization by ball milling change the chemical structure of organic matter in geochemical samples? - A CPMAS ¹³C NMR study with lignin. / Schmidt, Michael W.I.; Knicker, Heike; Hatcher, Patrick G. et al.
In: Organic Geochemistry, Vol. 26, No. 7-8, 04.1997, p. 491-496.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Does ultrasonic dispersion and homogenization by ball milling change the chemical structure of organic matter in geochemical samples? - A CPMAS 13C NMR study with lignin

AU - Schmidt, Michael W.I.

AU - Knicker, Heike

AU - Hatcher, Patrick G.

AU - Kögel-Knabner, Ingrid

PY - 1997/4

Y1 - 1997/4

N2 - Ultrasonic dispersion of geochemical samples suspended in water and subsequent homogenization by ball milling is widely used for fractionation of organic matter. The effect of these treatments on organic matter is investigated with lignin as a model compound. Structural alterations detectable by solid-state 13C nuclear magnetic resonance (NMR) spectroscopy were examined. Comparison of the solid-state 13C NMR spectra of untreated lignin and lignin mixed with quartz or so did not reveal evidence for structural changes in the organic matter composition after ultrasonic dispersion and subsequent ball-milling. The chemical structure of organic matter in geochemical samples is not affected by these treatments as far as such structural alterations can be detected by solid-state 13C NMR spectroscopy.

AB - Ultrasonic dispersion of geochemical samples suspended in water and subsequent homogenization by ball milling is widely used for fractionation of organic matter. The effect of these treatments on organic matter is investigated with lignin as a model compound. Structural alterations detectable by solid-state 13C nuclear magnetic resonance (NMR) spectroscopy were examined. Comparison of the solid-state 13C NMR spectra of untreated lignin and lignin mixed with quartz or so did not reveal evidence for structural changes in the organic matter composition after ultrasonic dispersion and subsequent ball-milling. The chemical structure of organic matter in geochemical samples is not affected by these treatments as far as such structural alterations can be detected by solid-state 13C NMR spectroscopy.

KW - CPMAS C NMR

KW - Lignin

KW - Organic matter

KW - Sediment

KW - Soil

KW - Ultrasonic dispersion

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DO - 10.1016/S0146-6380(97)00047-8

M3 - Article

AN - SCOPUS:0031126651

SN - 0146-6380

VL - 26

SP - 491

EP - 496

JO - Organic Geochemistry

JF - Organic Geochemistry

IS - 7-8

ER -

Does ultrasonic dispersion and homogenization by ball milling change the chemical structure of organic matter in geochemical samples? - A CPMAS ¹³C NMR study with lignin

Abstract

Keywords

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