Similarities in chemical composition of soil organic matter across a millennia-old paddy soil chronosequence as revealed by advanced solid-state NMR spectroscopy

2013 ◽  
Vol 50 (4) ◽  
pp. 571-581 ◽  
Author(s):  
Zhigao Zhou ◽  
Xiaoyan Cao ◽  
Klaus Schmidt-Rohr ◽  
Daniel C. Olk ◽  
Shunyao Zhuang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Soil Organic Matter ◽  
Paddy Soil ◽  
Solid State Nmr ◽  
Solid State Nmr Spectroscopy ◽  
Soil Chronosequence ◽  
Paddy Soil Chronosequence

scholarly journals Advanced solid-state NMR spectroscopy of natural organic matter

2017 ◽  
Vol 100 ◽  
pp. 17-51 ◽  
Author(s):  
Jingdong Mao ◽  
Xiaoyan Cao ◽  
Dan C. Olk ◽  
Wenying Chu ◽  
Klaus Schmidt-Rohr
Keyword(s):  
Organic Matter ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Natural Organic Matter ◽  
Solid State Nmr ◽  
Solid State Nmr Spectroscopy

Composition of clay-fraction organic matter in Holocene paleosols revealed by advanced solid-state NMR spectroscopy

Geoderma ◽  
2014 ◽  
Vol 223-225 ◽  
pp. 54-61 ◽  
Author(s):  
Zhigao Zhou ◽  
Na Chen ◽  
Xiaoyan Cao ◽  
Teresita Chua ◽  
Jingdong Mao ◽  
...  
Keyword(s):  
Organic Matter ◽  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Clay Fraction ◽  
Solid State Nmr Spectroscopy

scholarly journals A New Methodological Approach to Correlate Protective and Microscopic Properties by Soft X-ray Microscopy and Solid State NMR Spectroscopy: The Case of Cusa’s Stone

2021 ◽  
Vol 11 (13) ◽  
pp. 5767
Author(s):  
Veronica Ciaramitaro ◽  
Alberto Spinella ◽  
Francesco Armetta ◽  
Roberto Scaffaro ◽  
Emmanuel Fortunato Gulino ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Methodological Approach ◽  
Polymer Chains ◽  
General Question ◽  
Protective Agent ◽  
Vapour Permeability ◽  
X Ray ◽  
Solid State Nmr Spectroscopy

Hydrophobic treatment is one of the most important interventions usually carried out for the conservation of stone artefacts and monuments. The study here reported aims to answer a general question about how two polymers confer different protective performance. Two fluorinated-based polymer formulates applied on samples of Cusa’s stone confer a different level of water repellence and water vapour permeability. The observed protection action is here explained on the basis of chemico-physical interactions. The distribution of the polymer in the pore network was investigated using scanning electron microscopy and X-ray microscopy. The interactions between the stone substrate and the protective agents were investigated by means of solid state NMR spectroscopy. The ss-NMR findings reveal no significant changes in the chemical neighbourhood of the observed nuclei of each protective agent when applied onto the stone surface and provide information on the changes in the organization and dynamics of the studied systems, as well as on the mobility of polymer chains. This allowed us to explain the different macroscopic behaviours provided by each protective agent to the stone substrate.

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