a special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. they have lower internal volume than the standard high-performance liquid chromatography (hplc) columns and thus reduce the solvent consumption by almost 80%.    a simple, accurate and environmentally friendly reversed phase- hplc (rp-hplc method) which could be used in fast ...

     A special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. They have lower internal volume than the standard high-performance liquid chromatography (HPLC) columns and thus reduce the solvent consumption by almost 80%.    A simple, accurate and environmentally friendly reversed phase- HPLC (RP-HPLC method) which could be used in ...

     A special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. They have lower internal volume than the standard high-performance liquid chromatography (HPLC) columns and thus reduce the solvent consumption by almost 80%.    A simple, accurate and environmentally friendly reversed phase- HPLC (RP-HPLC method) which could be used in ...

A gas chromatographic (GC) method was developed for the determination of sucrose monoesters of fatty acids (mono-SuE) and sucrose acetate isobutyrate (SAIB) in food additive premixes. Mono-SuE and SAIB fractions were prepared by column chromatography with either a C8 or a silica gel solid-phase extraction column. The mono-SuE fraction was acetylated and applied to a wide-bore GC column (0.53 mm...

A special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. They have lower internal volume than the standard high-performance liquid chromatography (HPLC) columns and thus reduce the solvent consumption by almost 80%. A simple, accurate and environmentally friendly reversed phase- HPLC (RP-HPLC method) which could be used in fast and...

A facile method for quantifying the concentration of the powerful and widely available hallucinogen salvinorin A (a selective kappa opioid agonist) from non-human primate cerebrospinal fluid (CSF) and human plasma has been developed using liquid chromatography-tandem mass spectrometry (LC-MS/MS) in positive electrospray ionization (ESI) mode. With CSF solid phase extraction can be avoided compl...

Submit Manuscript | http://medcraveonline.com bioactive, and their use could be diverted towards either in the animal feed production, or to the recovery of purified molecules for nutraceutical purposes. Since they occur in complex mixture for their analyses a very advanced analytical liquid chromatography technique was employed. Such a technique is called ccomprehensive two-dimensional liquid ...

Five previously unknown fumonisin mycotoxins (iso-FP1, iso-FP(2,3a), iso-FP(2,3b), FP4 and iso-FP4) and three previously described FP analogues (FP(1-3)) were detected in a solid rice culture inoculated with Fusarium verticillioides. The fumonisins were characterized by high-performance liquid chromatography-electrospray ionization time-of-flight mass spectrometry (HPLC-ESI-TOFMS) and ion trap ...

This article describes the use of a new prototype column hardware made with 1.5 mm internal diameter (i.d.) and demonstrates some benefits over 1.0 i.d. micro-bore column. The performance 2.1, columns were systematically compared. With column, loss apparent efficiency can be significantly reduced compared to in both isocratic gradient elution modes. In end, is almost comparable 2.1 from peak br...

While tailing and overloading of basic compounds remain problematic on most RP columns, a new kind of positively charged RP column named XCharge C18 was found to be superior good for the separation of alkaloids in our practical use. In this work, the surface charge property of the XCharge C18 column was evaluated by the retention of NO(3)(-) under different pH values and buffer concentrations. ...