Effect of Magnesium phosphoricum 12c on Sodium Dodecylsulphate by 13C nuclear magnetic resonance / Efeito do Magnesium phosphoricum 12c em Dodecilsulfato de sódio mediante ressonância magnética nuclear C13
Alvarenga, Elson Santiago de; Oliveira, Ana Paula Marques de; Silva, Rosméri Terezinha Battirola da; Casali, Vicente Wagner Dias.
Int. j. high dilution res
; 8(26): 3-8, 2009. graf
Artículo
en Inglés
| LILACS | ID: lil-529840
Sodium dodecylsulphate (SDS) dissolved in water forms aggregates whose thermodynamic properties are well defined. The interest in polymer-surfactant systems derives from increasing possibilities to apply them in pharmaceutics, cosmetics and environmental protection. Nutrient content of soils after many years of use is a concern in many areas; on the other hand, the metabolism of plants approaches equilibrium when the conditions necessary for their growth are present. Magnesium and phosphorus are important nutrients for plants and high dilutions of Magnesium phosphoricum (Mag-p) may carry information related to them.
Aims:
To study the influence of Mag-p on SDS aggregates.Methods:
the effect of Mag-p dilution 12c on the structure of SDS aggregates was assayed through 13C nuclear magnetic resonance.Results:
The spectrum of SDS and Mag-p 12c in D2O presented an extra signal in 221.41 ppm when compared to the SDS / D2O spectrum. The C=O group of ketones and aldehydes absorb around 200 ppm. The carbon carbonyl shows large spin-lattice relaxation times (T1) and weak NOE (Nuclear Overhauser Effect) enhancement, thus signal from this type of atom are very weak when compared to signals from carbon atoms with hydrogen. The signal present in 221.41 ppm was comparable in size to the other signals in the spectrum indicating that it was not a machine-generated artifact. The experiments carried out in this work suggest that this signal was induced by a combination of SDS and the high diluted solution.
Biblioteca responsable:
BR926.1
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