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Solvothermal method to obtain europium-doped yttrium oxide
Bioactive phenolic derivatives from Acaena splendens methanol extract
- N. Backhouse, C. Delporte, R. Negrete, S. Feliciano, J. López-Pérez
- ChemistryPhytotherapy research : PTR
- 1 September 2002
The methanol extract named ME‐1, obtained after succesive extractions with petroleum ether and dichloromethane, showed a strong antipyretic action, though the antiinflammatory activity was only observed after submitting this extract to column fractionation, giving a crude mixture of flavonoids named C4 with both activities.
Porous Silica Matrix Obtained from Pyrex Glass by Hydrothermal Treatment: Characterization and Nature of the Porosity
A novel porous silica matrix has been prepared from Pyrex glass, using hydrothermal treatment under saturated-steam condition. This process makes it possible to obtain, in one step, a silica support…
Optimization and validation of a SPME-GC-ECD methodology for the determination of organochlorine pesticides in natural spring waters from Portugal
Optimization and validation of a chromatographic methodology for the quantification of PAHs in drinking water samples
Polycyclic aromatic hydrocarbons (PAHs) are one of the most important persistent organic toxic micropollutants present in water. These compounds are essentially known for their carcinogenic,…
Evaluation of water quality in public drinking fountains.
Water consumption from the studied public fountains in the Sintra Municipality seems to present a high risk for the population’s health, due to the potential contamination with pathogenic microorganisms.