Abstract UV/Vis absorption spectroelectrochemistry is a very promising analytical technique due to the complementary information that simultaneously obtained from electrochemistry and spectroscopy. In this work, used in parallel configuration study oxidation of folic acid alkaline medium. Herein, has been detect both products consumed at electrode/solution interface, allowing us develop an prot...

Mass spectrometry is analytical instrument which has been used for more than a century with its initial work on mass charge ratio being carried out by W. Wien, J.J. Thomson, and other physicists [1]. Mass Spectroscopy is an analytical laboratory technique to separate the components of a sample by their mass. The sample is vaporized into a gas and then ionized. The ions are then accelerated thro...

In the biological sciences, mass spectrometry is one of the most popular methods employed for the determination of the molecular weights and structures of metabolites. The popularity of mass spectrometry is due to the high sensitivity of the analytical method and the possibility of obtaining molecular weights and structure of metabolites directly from high performance liquid chromatography (HPL...

The development of automatized hyphenated systems is attractive to avoid sampling error, save time and reduce costs. Among these systems, on-line SFE-SFC allows the extraction, separation, detection molecules in an efficient, quick eco-friendly way. After a historical introduction explanation on use supercritical fluids for extraction or analysis, principles fluid (SFE) chromatography (SFC) wil...

Chemical methods are the most important and widely used traditional plant identification techniques recommended by national international pharmacopoeias. We have reviewed successful use of different chemical for botanical authentication 2,386 commercial herbal products, sold in 37 countries spread over six continents. The majority analyzed products were reported to be authentic (73%) but more t...

An overview is presented of gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS), the two major hyphenated techniques employed in metabolic profiling that complement direct 'fingerprinting' methods such as atmospheric pressure ionization (API) quadrupole time-of-flight MS, API Fourier transform MS, and NMR. In GC/MS, the analytes are normally derivati...