Read all posts from November 2015

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Using pomelo peel for the synthesis of monolithic ordered mesoporous silica

Monolithic ordered mesoporous silicas are highly attractive as sorbents in extraction techniques due to their physicochemical characteristics. To be really effective, there must be a balance between their macroporous and mesoporous structure. Macropores enhance the extraction kinetics allowing an easier diffusion of the target compounds from the bulk samples to the active surface of the material. Mesoporous defines the active surface of the material....Link to the post

Dynamic electromembrane extraction

The potential of electromembrane extraction (EME) is beyond any doubt [1]. As you well know, it is based on the electromigration of the target charged analyte from the donor phase (the sample) to the aqueous acceptor phase through a polymeric membrane that physically separates both phases. The extraction is rapid and it provides high enrichment factors......Link to the post

Bubble-in- drop single drop microextraction with mixed solvents

The intentional incorporation of air bubbles to solvent drops enhances the extraction efficiency in single drop microextraction (SDME). The reason behind this experimental fact is simple: the air bubble increases the surface to volume ratio of the drop. In other words, the same organic solvent volume presents a larger surface and therefore a better extraction kinetics. This idea, which was firstly proposed by Williams et al. in 2011, [1] has been recently revisited by the same research group proposing mixed solvents as extractant. Mixed solvents can present even better extraction properties, due to special....Link to the post



The study of historical documents: morphine in Bulgakov´s famous manuscript

Mikhail Bulgakov was a recognized writer born in Kiev in 1891. His famous novel, The master and Margarita, criticizes the soviet society and the literature establishment. He wrote the novel by the end of his life. In these days, Bulgakov was suffering nephrosis that caused his death in 1940. Researchers from Italy and Israel have chemically evaluated the original manuscript of the novel.....Link to the post



Highlighted articles (November 27th, 2015)


(1) Application of graphitic sorbent for on-line microextraction of drugs in human plasma samples. (2) In-line coupling of single drop microextraction with capillary electrophoresis-mass spectrometry. Link to the post

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