Aliphatische Polyether, Grundbausteine von natürlichen Huminstoffen: Nachweis durch Festkörper‐<sup>13</sup>C‐NMR‐Spektroskopie

Bayer, Ernst; Albert, Klaus; Bergmann, Wolf; Jahns, Kuno; Eisener, Wolfram; Peters, Hans-Konrad

doi:10.1002/ange.19840960219

Cited by 10 publications

(1 citation statement)

References 9 publications

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“…Carbon-13 NMR spectrometry has been used to tentatively identify alkylphenol polyethoxylates in groundwater (14) and polyethoxylates in humic substances extracted from sewage sludges (15). The repeating proton and carbon units in the polyethoxylate chains are represented by a single peak in both and the 13C NMR spectra; the presence of a single peak decreases the limit of detection when polyethoxylates are isolated in complex matrixes that occur in water and sewage sludges.…”

Section: Introductionmentioning

confidence: 99%

Detection of poly(ethylene glycol) residues from nonionic surfactants in surface water by proton and carbon-13 nuclear magnetic resonance spectrometry

Leenheer¹,

Wershaw²,

Brown³

et al. 1991

Environ. Sci. Technol.

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Polyethylene glycol) (PEG) residues were detected in organic solute isolates from surface water by nuclear magnetic resonance spectrometry (NMR), 13C NMR spectrometry, and colorimetric assay. PEG residues were separated from natural organic solutes in Clear Creek, CO, by a combination of methylation and chromatographic procedures. The isolated PEG residues, characterized by NMR spectrometry, were found to consist of neutral and acidic residues that also contained polypropylene glycol)moieties. The NMR and the colorimetric assays for polyethylene glycol) residues were done on samples collected in the lower Mississippi River and tributaries between St. Louis, MO, and New Orleans, LA, in July-August and November-December 1987. Aqueous concentrations for polyethylene glycol) residues based on colorimetric assay ranged from undetectable to ~28 Mg/L. Concentrations based on NMR spectrometry ranged from undetectable to 145 Mg/L.

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Section: Introductionmentioning

confidence: 99%

Detection of poly(ethylene glycol) residues from nonionic surfactants in surface water by proton and carbon-13 nuclear magnetic resonance spectrometry

Leenheer¹,

Wershaw²,

Brown³

et al. 1991

Environ. Sci. Technol.

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ChemInform Abstract: ALIPHATIC POLYETHERS AS BUILDING BLOCKS FOR NATURAL HUMIC SUBSTANCES: DETECTION BY SOLID STATE CARBON‐13 NMR SPECTROSCOPY

Bayer¹,

Albert²,

Bergmann³

et al. 1984

Chemischer Informationsdienst

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Impacts of Soil Management Practices on the Organic Matter Structure ‐ Investigations by CPMAS ¹³CNMR‐Spectroscopy

Fründ

Haider

Lödemann

1994

J Plant Nutrition & Soil

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Humus properties of 42 soil samples or humic extracts of Ap horizons of Cambisols and Luvisols, from different field plots, kept for a long time under continuous management conditions, have been studied by quantitative CPMAS 13C NMR‐spectroscopy. The shift range of the spectra were divided into 8 regions, with carbon absorptions from 0–45 (aliphatics), 45–60 (OCH3), 60–80 (COCN), 80–110 (anomeric carbons), 110–140 (aryl—C), 140–160 (O‐aryl‐C) and 160–210 (COOHCO) ppm, respectively. Although soil samples and humic extracts were obtained from plots from different locations and sometimes widely differing organic carbon contents, variances in the relative absorptions of the selected ranges were rather small. Several absorptions were significantly correlated among each other or with soil carbon and microbial biomass contents. These correlations were discussed with the applied management and with other results about humus formation and properties. CPMAS 13C NMR‐spectroscopy allows a reliable and comprehensive characterization of soil organic matter from soils without previous fractionation.

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Aliphatische Polyether, Grundbausteine von natürlichen Huminstoffen: Nachweis durch Festkörper‐¹³C‐NMR‐Spektroskopie

Cited by 10 publications

References 9 publications

Detection of poly(ethylene glycol) residues from nonionic surfactants in surface water by proton and carbon-13 nuclear magnetic resonance spectrometry

Detection of poly(ethylene glycol) residues from nonionic surfactants in surface water by proton and carbon-13 nuclear magnetic resonance spectrometry

ChemInform Abstract: ALIPHATIC POLYETHERS AS BUILDING BLOCKS FOR NATURAL HUMIC SUBSTANCES: DETECTION BY SOLID STATE CARBON‐13 NMR SPECTROSCOPY

Impacts of Soil Management Practices on the Organic Matter Structure ‐ Investigations by CPMAS ¹³CNMR‐Spectroscopy

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Aliphatische Polyether, Grundbausteine von natürlichen Huminstoffen: Nachweis durch Festkörper‐13C‐NMR‐Spektroskopie

Cited by 10 publications

References 9 publications

Detection of poly(ethylene glycol) residues from nonionic surfactants in surface water by proton and carbon-13 nuclear magnetic resonance spectrometry

Detection of poly(ethylene glycol) residues from nonionic surfactants in surface water by proton and carbon-13 nuclear magnetic resonance spectrometry

ChemInform Abstract: ALIPHATIC POLYETHERS AS BUILDING BLOCKS FOR NATURAL HUMIC SUBSTANCES: DETECTION BY SOLID STATE CARBON‐13 NMR SPECTROSCOPY

Impacts of Soil Management Practices on the Organic Matter Structure ‐ Investigations by CPMAS 13CNMR‐Spectroscopy

Contact Info

Product

Resources

About

Aliphatische Polyether, Grundbausteine von natürlichen Huminstoffen: Nachweis durch Festkörper‐¹³C‐NMR‐Spektroskopie

Impacts of Soil Management Practices on the Organic Matter Structure ‐ Investigations by CPMAS ¹³CNMR‐Spectroscopy